Publications

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2024

Wirth, M., Ortiz, A. and Klein, A. “Risk-Aware Bandits for Digital Twin Placement in Non-Stationary Mobile Edge Computing” 'IEEE International Conference on Communications ICC', Denver, CO USA, 2024. Accepted.

Yilmaz, B., Xiang, L. and Klein, A. “Joint Beamforming and Trajectory Optimization for UAV-Enabled ISAC under a Finite Energy Budget” 'IEEE International Conference on Communications ICC', Denver, CO USA, 2024. Accepted.

Simon, B., Ortiz, A., Saad, W. and Klein, A. “Decentralized Online Learning in Task Assignment Games for Mobile Crowdsensing,” IEEE Transactions on Communications, 2024. Accepted.

Yilmaz, B., Xiang, L. and Klein, A. “Joint Beamforming and Trajectory Optimization for UAV-Aided ISAC with Dipole Antenna Array” (opens in new tab) '27th International Workshop on Smart Antennas (WSA)', Dresden, Germany, 2024.

Dongare, S., Jovovich, A., de Sombre, W., Ortiz, A. and Klein, A. (2024), 'Minimizing the Age of Incorrect Information for Status Update Systems with Energy Harvesting' 'IEEE International Conference on Communications ICC', Denver, Colorado, 2024. Accepted.

Xiang, L., Pei, F. and Klein, A., 'Joint Optimization of Beamforming and 3D Array Steering for Multi-antenna UAV Communications' 'IEEE Wireless Communications and Networking Conference (WCNC)', Dubai, VAE, 2024. Accepted

Pei, F., Xiang, L. and Klein, A., 'Joint Optimization of Beamforming and 3D Array-Steering for UAV-Aided ISAC' 'IEEE International Conference on Communications ICC', Denver, Colorado, 2024. Accepted

Dongare, S., Simon, B., Ortiz, A and Klein, A., 'Two-Sided Learning: A Techno-Economic View of Mobile Crowdsensing under Incomplete Information' 'IEEE International Conference on Communications ICC', Denver, Colorado, 2024. Accepted

Wang, Y., Krantzik, M., Xiang, L. and Klein, A., 'Joint Communication and Computing Optimization for Digital Twin Synchronization with Aerial Relay' 'IEEE International Conference on Communications ICC', Denver, Colorado, 2024. Accepted.

Pyttel, F., de Sombre, W., Ortiz, A. and Klein, A. (2024), 'Age of Information Minimization in Status Update Systems with Imperfect Feedback Channel' 'IEEE International Conference on Communications ICC', Denver, Colorado, 2024. Accepted.

2023

Gargari, A. A., Ortiz, A., Pagin, M., Klein, A., Hollick, M., Zorzi, M. and Asadi, A., "Safehaul: Risk-Averse Learning for Reliable mmWave Self-Backhauling in 6G Networks (opens in new tab) “, 'IEEE International Conference on Computer Communications INFO-COM.', New York City, New York, USA, 2023.

Sterz, A., Klose, R., Sommer, M., Hoechst, N., Link, J., Simon, B., Klein, A., Hollick, M. and Freisleben, B. ”Energy-efficient Decentralized Broadcasting in Wireless Multi-hop Networks (opens in new tab) “, Sensors (23:17), 2023.

Zhang, J., Liu, J., Xiang, L. and Ge, X. ”Full-Link AoI Analysis of Uplink Transmission in Next-Generation FTTR WLANs (opens in new tab) “, 'IEEE Vehicular Technology Conference (VTC)', Florence, Italy, 2023.

Cui, K., Baumgaertner, L., Yilmaz, B., Li, M., Fabian, C., Becker, B., Xiang, L., Bauer, M. and Koeppl, H. ”UAV Swarms for Joint Data Ferrying and Dynamic Cell Coverage via Optimal Transport Descent and Quadratic Assignment (opens in new tab) “, 'IEEE 48th Conference on Local Computer Networks (LCN)', Daytona Beach, Florida, USA, 2023.

Wang, Y., Xiang, L. and Klein, A. ”Energy-Constrained UAV Trajectory Design for Sensing Information Maximization (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

De Sombre, W., Marques, F., Pyttel, F., Ortiz, A. and Klein, A. ”A Unified Approach to Learn Transmission Strategies Using Age-Based Metrics in Point-to-Point Wireless Communication (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

Dongare, S., Ortiz, A. and Klein, A. ”Federated Deep Reinforcement Learning for Task Participation in Mobile Crowdsensing (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

Xiang, L., Zhang, M. and Klein, A. ”Robust Dynamic Trajectory Optimization for UAV-Aided Localization of Ground Target (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

Chehimi, M., Simon, B., Saad, W., Klein, A., Towsley, D. and Debbah, M. ”Matching Game for Optimized Association in Quantum Communication Networks (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

Wirth, M., Ortiz, A. and Klein, A. ”Contextual Multi-Armed Bandits for Non-Stationary Heterogeneous Mobile Edge Computing (opens in new tab) “, 'IEEE Globecom', Kuala Lumpur, Malaysia, 2023.

De Sombre, W., Ortiz, A., Aurzada, F. and Klein, A. ”Risk-Sensitive Optimization and Learning for Minimizing Age of Information in Point-to-Point Wireless Communications (opens in new tab) “, 'IEEE International Conference on Communication', Rome, Italy, 2023.

Simon, B., Keller, K., Sterz, A., Freisleben, B., Hinz, O. and Klein, A. ”A Multi-Stakeholder Modeling Framework for the Techno-Economic Analysis of Telecommunication Networks (opens in new tab) “, IEEE Communications Magazine (61:2), 2023, pp. 52-56.

Simon, B., Mehler, H. and Klein, A. ”Online Learning in Matching Games for Task Offloading in Multi-Access Edge Computing (opens in new tab) “, 'IEEE International Conference on Communications', Rome, Italy, 2023.

Wang, Y., Xiang, L. and Klein, A. ”Completion Time Minimization for UAV-Based Communications with a Finite Buffer (opens in new tab) ", 'IEEE International Conference on Communications', Rome, Italy, 2023.

2022

Kiekenap, K. "Communication Resource Allocation in Wireless Networked Control Systems (opens in new tab) “, Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, 2022.

Quispe, J., Maciel, T., Silva, Y. and Klein, A. ”RIS-assisted beamforming for energy efficiency in multiuser downlink transmissions (opens in new tab) “. 'IEEE Global Communications Conference (Globecom)', Rio de Janeiro, Brazil, 2022.

Cui, K., Yilmaz, B., Tahir, A., Klein, A. and Koeppl, H. ”Optimal Offloading Strategies for Edge-Computing via Mean-Field Games and Control (opens in new tab) “, 'IEEE Global Communications Conference (Globecom)', Rio de Janeiro, Brazil, 2022.

Dongare, S., Ortiz, A. and Klein, A. ”Deep Reinforcement Learning for Task Allocation in Energy Harvesting Mobile Crowdsensing (opens in new tab) “, 'IEEE Global Communications Conference (Globecom)', Rio de Janeiro, Brazil, 2022.

Li, Z., Xiang, L. and Ge, X. ”Age of Information Modeling and Optimization for Fast Information Dissemination in Vehicular Social Networks (opens in new tab) “, “IEEE Transactions on Vehicular Technology“ (71:5), 2022, pp. 5445-5459.

Lu, G., Zhang, J., Xiang, L. and Ge, X. ”A Global Optimization Method for Energy-Minimal UAV-Aided Data Collection over Fixed Flight Path (opens in new tab) “, 'IEEE International Conference on Communications', Seoul, South Korea, 2022.

Wang, Y., Xiang, L., Zhang, J. and Ge, X. ”Connectivity Analysis for Large-Scale Intelligent Reflecting Surface Aided mmWave Cellular Networks (opens in new tab) “, 'IEEE International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC', Virtual Conference, 2022.

Wirth, M., Klein, A. and Ortiz, A. ”Risk-Aware Mulit-Armed Bandits for Vehicular Communications (opens in new tab) “, 'IEEE 95th Vehicular Technology Conference (VTC-Spring)', Helsinki, Finland, 2022.

Yilmaz, B., Xiang, L. and Klein, A. ”UAV-Assisted Delay-Sensitive Communications with Uncertain User Locations: A Cost Minimization Approach (opens in new tab) “, 'IEEE International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC', Virtual Conference, 2022.

Mauricio, W., Maciel, T., Klein, A. and Lima, R. ”Scheduling for Massive MIMO with Hybrid Precoding using Contextual Multi-Armed Bandits“, ”IEEE Transactions on Vehicular Technology, 2022. (Accepted)

Simon B, Dongare S, Mahn T, Ortiz A and Klein A (2022), "Delay- and Incentive-Aware Crowdsensing: A Stable Matching Approach for Coverage Maximization (opens in new tab) “, In IEEE International Conference on Communications. Seoul, South Korea, May, 2022.

Sterz, A., Felka, P., Simon, B., Klos, S., Klein, A., Hinz, O. and Freisleben, B. ”Multi-Stakeholder Service Placement via Iterative Bargaining with Incomplete Information (opens in new tab) ", IEEE ACM Transactions on Networking (30:4), 2022, pp. 1822-1837.

2021

Simon, B., Destan, M. and Klein, A. "Reliable Two-Timescale Scheduling in a Multi-User Downlink Channel with Hard Deadlines (opens in new tab) “, 'IEEE Global Communications Conference (Globecom 2021)', Madrid, Spain, 2021.

Hessinger, C., Schüßler, M., Klos, S., Kochanek, M. and Jakoby, R. ”Numerical Optimization of an Open-Ended Coaxial Slot Applicator for the Detection and Microwave Ablation of Tumors, (opens in new tab) “ Biology MDPI (10), 2021.

Kiekenap, K., Ortiz, A. and Klein, A. ”Energy-Optimal Short Packet Transmission for Time-Critical Control (opens in new tab) “, 'IEEE 94th Vehicular Technology Conference (VTC2021-Fall) 2021', Virtual, 2021.

Mahn, T. and Klein, A. ”A Global Orchestration Matching Framework for Energy-Efficient Multi-Access Edge Computing (opens in new tab) “, '10th IEEE International Conference on Cloud Networking (IEEE CloudNet 2021)', Virtual, 2021.

Quispe, J., Maciel, T., Silva, Y. and Klein, A. ”Beamforming and link activation methods for energy efficient RIS-aided transmissions in C-RANs (opens in new tab) “, 'IEEE Global Communications Conference (Globecom 2021)', Madrid, Spain, 2021.

Quispe, J., Maciel, T., Silva, Y. and Klein, A. ”Joint Beamforming and BS Selection for Energy-Efficient Communications via Aerial-RIS (opens in new tab) “, 'IEEE Global Communications Conference (Globecom 2021)', Madrid, Spain, 2021.

Keller, K., Ott, M., Hinz, O. and Klein, A. ”Influence of Social Relationships on Decisions in Device-to-Device Communication (opens in new tab) “, IEEE ACCESS 9, 2021, pp. 1-17.

Ortiz, A., Weber, T. and Klein, A. ”Multi-Agent Reinforcement Learning for Energy Harvesting Two-Hop Communications with a Partially Observable System State, (opens in new tab) " IEEE Transactions on Green Communications and Networking 5(1), 2021.

2020

Pietsch, M., Klein, A. and Steinke, F. "Merging Microgrids for Optimal Distribution Grid Restoration under Explicit Communication Constraints (opens in new tab) “'IEEE Resilience Week 2020 Symposium', IEEE, Online, 2020.

Kiekenap, K. and Klein, A. ”Optimum Sensor Value Transmission Scheduling for Linear Wireless Networked Control Systems (opens in new tab) “'IEEE 92nd Vehicular Technology Conference: (VTC2020-Fall) ', Online, 2020.

Yilmaz, B., Ortiz, A. and Klein, A. ”Delay Minimization for Edge Computing with Dynamic Server Computing Capacity: A Learning Approach (opens in new tab) “'IEEE Global Communications Conference (Globecom)', Taipei, Taiwan, 2020.

Mahn, T. and Klein, A. ”Energy-Efficient Application-Aware Mobile Edge Computing with Multiple Access Points (opens in new tab) “'IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)', London, UK, Aug 2020.

Sim, G. H., Mousavi, M., Wang, L., Klein, A. and Hollick, M. ”Joint Relaying and Spatial Sharing Multicast Scheduling for mmWave Networks (opens in new tab) “'21st IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (IEEE WoWMoM 2020)', 2020.

Mauricio, W., Maciel, T., Klein, A. and Lima, F. ”Learning-Based Scheduling: Contextual Bandits For Massive MIMO Systems (opens in new tab) “'IEEE International Conference on Communications ICC', Jun 2020.

Mousavi, M. and Klein, A. ”Energy and Social Cost Minimization for Data Dissemination in Wireless Networks: Centralized and Decentralized Approaches (opens in new tab) “, IEEE Transactions on Vehicular Technology 69(5), 2020, pp. 5521-5534.

Mahn, T., Wirth, M. and Klein, A. ”Game Theoretic Algorithm for Energy Efficient Mobile Edge Computing with Multiple Access Points (opens in new tab) “'8th IEEE International Conference on Mobile Cloud Computing, Services, and Engineering (Mobile Cloud)', Oxford, UK, Apr 2020.

Papsdorf, D. ”Relay-Aided Communication in Large Interference Limited Wireless Networks (opens in new tab) “, Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Mar 2020.

M. Mousavi, H. Al-Shatri & A. Klein, ”Cost Sharing Games for Energy-Efficient Multi-Hop Broadcast in Wireless Networks," IEEE Transactions on Wireless Communications, vol. 19, pp. 310-324, Jan 2020.

2019

Hollick, M., Hofmeister, A., Engels, J. I., Freisleben, B., Hornung, G., Klein, A., Knodt, M., Lieser, P., Lorenz, I., Mühlhäuser, M., Pelz, P., Rudolph-Cleff, A., Steinmetz, R., Steinke, F. and von Stryk, O. "The Emergency Responsive Digital City (opens in new tab) “'World Congress on Resilience, Reliability and Asset Management WCRRAM', Singapore, 2019.

F. Hohmann, ”Cooperative Communication in Wireless OFDMA Multi-Hop Networks (opens in new tab) “, Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Dec 2019.

A. Ortiz, A. Asadi, G. H. Sim, D. Steinmetzer and M. Hollick, ”SCAROS: A Scalable and Robust Self-backhauling Solution for Highly Dynamic Millimeter-Wave Networks, (opens in new tab) “, IEEE Journal on selected Areas in Communications (J-SAC), vol. 37, pp. 2585-2698, Dec 2019.

M. Mousavi & A. Klein, ”Decentralized Video Streaming in Multi-hop Wireless Networks: Incentive Mechanism and Energy Efficiency, (opens in new tab) “ IEEE Access, 2019.

A. Ortiz, ”Optimization and Learning Approaches for Energy Harvesting Wireless Communication Systems, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Oct 2019.

A. Ortiz, A. Asadi, M. Engelhardt, A. Klein & M. Hollick, ”CBMoS: Combinatorial Bandit Learning for Mode Selection and Resource Allocation in D2D Systems, (opens in new tab) “ IEEE Journal on Selected Areas in Communications vol. 37, pp. 2225-2238, Oct 2019.

M. Mousavi, ”Game Theory for Multi-hop Broadcast in Wireless Networks, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Oct 2019.

S. Klos, ”Context-Aware Decision Making in Wireless Networks: Optimization and Machine Learning Approaches, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Aug 2019.

M. Hollick, A. Hofmeister, J. I. Engels, B. Freisleben, G. Hornung, A. Klein, M. Knodt, I. Lorenz, M. Mühlhäuser, P. Pelz, A. Rudolph-Cleff, R. Steinmetz, F. Steinke & O. von Stryk, ”The Emergency Responsive Digital City, (opens in new tab) “ in Proc. World Congress on Resilience, Reliability and Asset Management WCRRAM 2019, pp. 136-143, Singapore, Jul 2019.

Z. Chen, ”On random gossiping in wireless sensor networks, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Jul 2019.

A. Ortiz, T. Weber & A. Klein, ”Resource Allocation in Energy Harvesting Multiple Access Scenarios via Combinatorial Learning, (opens in new tab) “ in Proc. IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Cannes, France, Jul 2019.

D. Papsdorf, S. Velumani & A. Klein, ”MIMO Multi-Group Multi-Way Relaying: Interference Alignment in a Partially Connected Network, (opens in new tab) “ in Proc. IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Cannes, France, Jul 2019.

B. Boiadjieva & A. Klein, ”Distributed Two-Stage Beamforming with Power Allocation in Multicell Massive MIMO, (opens in new tab) “ in Proc. IEEE International Conference on Communications ICC, Shanghai, China, May 2019.

B. Alt, M. Weckesser, C. Becker, M. Hollick, S. Kar, A. Klein, R. Klose, R. Kluge, H. Koeppl, B. Koldehofe, W. KhudaBukhsh, M. Luthra, M. Mousavi, M. Mühlhäuser, M. Pfannemüller, A. Rizk, A. Schürr & R. Steinmetz, ”Transitions: A Protocol-Independent View of the Future Internet, (opens in new tab) “ IEEE Proceedings, vol. 107, pp. 835-846, Apr 2019.

A. Tahir, H. Al-Shatri, K. Kiekenap & A. Klein, ”Ultra-Reliable Low Latency Communication for Consensus Control in Multi-Agent Systems, (opens in new tab) “ in Proc. IEEE Wireless Commuications and Networking Conference (WCNC), Marrakech, Morocco, Apr 2019.

L. Costa, Y. Silva, R. Marques Lima & A. Klein, ”Beam Allocation based on Spatial Compatibility for Hybrid Beamforming C-RAN Networks, (opens in new tab) “ in Proc. Workshop on Smart Antennas (WSA), Vienna, Austria, Apr 2019.

F. Hohmann, A. Ortiz & A. Klein, ”Optimal Resource Allocation Policy for Multi-Rate Opportunistic Forwarding," (opens in new tab) in Proc. IEEE Wireless Communications and Networking Conference (WCNC), Marrakech, Morocco, Apr 2019.

T. Mahn, H. Al-Shatri & A. Klein, "Distributed Algorithm for Energy Efficient Joint Cloud and Edge Computing with Splittable Tasks, (opens in new tab) “ in Proc. IEEE Wireless and Communications Networking Conference (WCNC), Marrakech, Morocco, Apr 2019.

A. Ivanov, K. Tonchev, V. Poulkov, & H. Al-Shatri, ”Hybrid Noise-Resilient Deep Learning Architecture for Modulation Classification in Cognitive Radio Networks“'International Conference on Future Access Enablers of Ubiquitous and Intelligent Infrastructures: Fabulous', Sofia, Bulgaria, Mar 2019, pp. 214-227.

H. Al-Shatri, K. Keller, F. Jacobfeuerborn, O. Hinz & A. Klein, ”Eliciting and Considering Underlay User Preferences for Data Forwarding in Multihop Wireless Networks, (opens in new tab) “ IEEE Access, vol. 7, pp. 40052-40067, Mar 2019 (DOI 10.1109/ACCESS.2019.2906731).

A. Buzuverov & A. Klein, ”On the DoF of the 2-Antenna 3-User MISO BC with Alternating CSIT, (opens in new tab) “ in Proc. 12th International ITG Conference on Systems, Communications and Coding, Rostock, Germany, Feb 2019.

K. Kiekenap, H. Al-Shatri & A. Klein, ”Trade-Off Between Measurement Accuracy and Quantization Precision for Minimum Bayes Risk in Wireless Networked Control Systems, (opens in new tab) “ in Proc. 12th International ITG Conference on Systems, Communications and Coding, Rostock, Germany, Feb 2019.

A. Buzuverov, ”Multi-User Networks with Outdated Channel State Information, (opens in new tab) " Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Jan 2019.

2018

G. H. Sim, S. Klos, A. Asadi, A. Klein & M. Hollick, "An Online Context-Aware Machine Learning Algorithm for 5G mmWave Vehicular Communications, (opens in new tab) “ IEEE/ACM Transactions on Networking, vol. 26, pp. 2487-2500, Dec 2018.

T. Mahn, D. Becker, H. Al-Shatri & A. Klein, ”Distributed Algorithm for Multi-Stage Computation Offloading, (opens in new tab) “ in Proc. IEEE 7th International Conference on Cloud Networking (CloudNet), Tokio, Japan, Oct 2018.

R. Hans, B. Richerzhagen, A. Rizk, U. Lampe, R. Steinmetz, S. Klos née Müller & A. Klein, ”Little Boxes: A Dynamic Optimization Approach for Enhanced Cloud Infrastructures, (opens in new tab) “ in Proc. 7th European Conference on Service-Oriented and Cloud Computing (ESOCC), Como, Italy, Sep 2018.

D. Jin, B. Boiadjieva, H. Backhaus, M. Fauß, T. Fu, A. Stroh, A. Klein & A. M. Zoubir, ”Analysis of Activity States of Local Neuronal Microcircuits in Mouse Brain, (opens in new tab) “ in Proc. 26th European Signal Processing Conference (EUSIPCO), Rome, Italy, Sep 2018.

S. Klos née Müller, C. Tekin, M. van der Schaar & A. Klein, ”Context-Aware Hierarchical Online Learning for Performance Maximization in Mobile Crowdsourcing, (opens in new tab) “ IEEE/ACM Transactions on Networking, vol. 26, pp. 1334-1347, Jun 2018.

B. Boiadjieva, H. Al Shatri & A. Klein, ”Hierarchical Beamforming in CRAN Using Random Matrix Theory, (opens in new tab) “ in Proc. IEEE International Conference on Communications (ICC), Kansas City, U.S.A., May 2018.

A. Asadi, S. Müller, G. H. Sim, A. Klein & M. Hollick, ”FML: Fast Machine Learning for 5G mmWave Vehicular Communications, (opens in new tab) “ in Proc. IEEE International Conference on Computer Communications (INFOCOM), Honolulu, Hawaii, Apr 2018.

A. Ortiz, T. Weber & A. Klein, ”A Two-Layer Reinforcement Learning Solution for Energy Harvesting Data Dissemination Scenarios, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Calgary, Canada, Apr 2018.

D. Nowak, T. Mahn, H. Al-Shatri, A. Schwartz & A. Klein, ”A Generalized Nash Game for Mobile Edge Computation Offloading, (opens in new tab) “ in Proc. 6th IEEE International Conference on Mobile Cloud Computing, Services, and Engineering (Mobile Cloud), Bamberg, Germany, Mar 2018.

B. Boiadjieva, H. Al Shatri & A. Klein, ”Scheduling Strategies for Hierarchical Beamforming in Cloud RAN, (opens in new tab) " in Proc. 22nd International ITG Workshop on Smart Antennas (WSA), Bochum, Germany, Mar 2018.

2017

A. Frömmgen, S. Klos, S. Sreeram, A. Klein, A. Buchmann, M. Lehn & R. Rehner, “Verfahren zur Aufrechterhaltung der Performance einer Multipath-TCP-Verbindung,” , 2017.

F. Hohmann & A. Klein, "Cooperative Forwarding using Distributed MISO in OFDMA Multihop Networks (opens in new tab) ,“ in Proc. IEEE 86th Vehicular Technology Conference VTC, Toronto, Canada, Sep 2017.

M. Mousavi, H. Al-Shatri, W. R. KhudaBukhsh, H. Koeppl & A. Klein, ”Cross-layer QoE-based Incentive Mechanism for Video Streaming in Multi-hop Wireless Networks, (opens in new tab) “ in Proc. IEEE 86th Vehicular Technology Conference (VTC), Toronto, Canada, Sep 2017.

A. Ortiz, H. Al-Shatri, X. Li, T. Weber & A. Klein, ”Reinforcement Learning for Energy Harvesting Decode-and-Forward Two-Hop Communications, (opens in new tab) “ IEEE Transactions on Green Communications and Networking, vol. 1, pp. 309-319, Sep 2017.

H. Al-Shatri & A. Klein, ”Hierarchical Beamforming for Downlink Fog RAN, (opens in new tab) “ in Proc. 14th International Symposium on Wireless Communication Systems (ISWCS), Bologna, Italy, Aug 2017.

C. Meurisch, T. Nguyen, M. Kromm, A. Ortiz, R. Mogk & M. Mühlhäuser, ”DisVis 2.0: Decision Support for Rescue Missions Using Predictive Disaster Simulations with Human-Centric Models, (opens in new tab) “ in Proc. International Conference on Computer Communications and Networks (ICCCN), Calgary, Canada, Jul 2017.

H. Le, H. Al Shatri & A. Klein, ”Efficient Resource Allocation in Mobile-edge Computation Offloading: Completion Time Minimization, (opens in new tab) “ in Proc. IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, Jun 2017.

M. Fasil, S. Müller, H. Al-Shatri & A. Klein, ”Exploiting Caching and Cross-Layer Transitions for Content Delivery in Wireless Multihop Networks (opens in new tab) “, International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) , Paris, France, May 2017.

D. Papsdorf, Y. C. B. Silva & A. Klein, ”Multicast Interference Alignment in a Multi-Group Multi-Way Relaying Network, (opens in new tab) “ in Proc. IEEE International Conference on Communications (ICC), Paris, France, May 2017.

M. Fasil, S. Müller, H. Al-Shatri & A. Klein, ”Exploiting Caching and Cross-Layer Transitions for Content Delivery in Wireless Multihop Networks, (opens in new tab) “ in Proc. 2nd Content Caching and Delivery in Wireless Networks Workshop (CCDWN), Paris, France, May 2017.

S. Mueller, O. Atan, M. van der Schaar & A. Klein, ”Context-Aware Proactive Content Caching with Service Differentiation in Wireless Networks, (opens in new tab) “ IEEE Transactions on Wireless Communications, vol. 16, pp. 1024-1036, Feb 2017.

L. Baumgaertner, P. Graubner, J. Hoechst, A. Klein & B. Freisleben, ”Speak Less, Hear Enough: On Dynamic Announcement Intervals in Wireless On-demand Networks, (opens in new tab) “ in Proc. 13th IEEE Wireless On-Demand Network Systems and Services Conference (WONS), Jackson Hole, Wyoming, USA, Feb 2017.

A. Buzuverov, H. Al Shatri & A. Klein, ”Exploiting Additional Transmit Antennas for More Degrees of Freedom in 3-User MIMO Interference Channel with Delayed CSIT, (opens in new tab) “ in Proc. 11th Internation ITG Conference on Systems, Communications and Coding (SCC), Hamburg, Germany, Feb 2017.

H. Le, H. Al Shatri & A. Klein, ”Optimal Joint Power Allocation and Task Splitting in Wireless Distributed Computing, (opens in new tab) “ in Proc. 11th International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, Germany, Feb 2017.

X. Li, A. Ortiz, H. Al Shatri, A. Klein & T. Weber, ”Delay-Constrained Data Transmission for Energy Harvesting Transmitter, (opens in new tab) “ in Proc. 11th International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, Germany, Feb 2017.

P. Semov, H. Al Shatri, K. Tonchev, V. Poulkov & A. Klein, ”Implementation of Machine Learning for Autonomic Capabilities in Self-Organizing Heterogeneous Networks, (opens in new tab) “ Wireless Personal Communications, vol. 92, pp. 149-168, Jan 2017 (Online Publication).

N. Dandanov, H. Al Shatri, A. Klein & V. Poulkov, ”Dynamic Self-Optimization of the Antenna Tilt for Best Trade-off Between Coverage and Capacity in Mobile Networks, (opens in new tab) " Wireless Personal Communications, vol. 92, pp. 251–278, Jan 2017.

2016

A. Ortiz, H. Al-Shatri, X. Li, T. Weber & A. Klein, "A Learning Based Solution for Energy Harvesting Decode-and-Forward Two-Hop Communications, (opens in new tab) “ in Proc. IEEE Global Communications Conference (Globecom), Washington, USA, Dez 2016.

D. Kifle, ”Adaptive Cellular Layout in Self-Organizing Networks using Acitve Antenna Systems, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Dec 2016.

M. Wichtlhuber, S. Buecker, R. Kluge, M. Mousavi & D. Hausheer, ”Of Strategies and Structures: Motif-based Fingerprinting Analysis of Online Reputation Networks, (opens in new tab) “ in Proc. 41st Annual IEEE Conference on Local Computer Networks (LCN), Dubai, UAE, Nov 2016.

A. Buzuverov, H. Al-Shatri & A. Klein, ”On the Achievable Degrees of Freedom of the MIMO X-Channel with Delayed CSIT, (opens in new tab) “ in Proc. IEEE Information Theory Workshop (ITW), Cambridge, United Kingdom, Sep 2016.

M. Fasil, H. Al-Shatri, S. Wilk & A. Klein, ”A Network-Centric View on DASH in Wireless Multihop Networks, (opens in new tab) “ in Proc. IEEE 84th Vehicular Technology Conference (VTC 2016-Fall), Montréal, Canada, Sep 2016.

F. Hohmann & A. Klein, ”Opportunistic forwarding using rateless codes in OFDMA multihop networks, (opens in new tab) “ in Proc. IEEE 84th Vehicular Technology Conference (VTC 2016-Fall), Montréal, Canada, Sep 2016.

D. Kifle, B. Wegmann, I. Viering & A. Klein, ”Self Optimizing Network (SON) Framework for Automated Vertical Sectorization, (opens in new tab) “ in Proc. 27th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Valencia, Spain, Sep 2016.

D. Papsdorf, X. Li, T. Weber & A. Klein, ”Inter-Subnetwork Interference Minimization in Partially Connected Two-Way Relaying Networks, (opens in new tab) “ in Proc. IEEE 84th Vehicular Technology Conference (VTC 2016-Fall), Montréal, Canada, Sep 2016.

R. SivaSiva Ganesan, H. Al-Shatri, X. Li, A. Klein & T. Weber, ”Signals and Communication Technology,“ in Communications in Interference Limited Networks, Wolfgang Utschick (Ed.), Chapter Interference Alignment Aided by Non-Regenerative Relays, pp. 327-345, Springer Verlag, no. ISBN-978-3-319-22439-8, 2016.

H. Al-Shatri, S. Mueller & A. Klein, ”Distributed Algorithm for Energy Efficient Multi-Hop Computation Offloading, (opens in new tab) “ in Proc. IEEE International Conference on Communications, Kuala Lumpur, Malaysia, May 2016.

H. Al-Shatri, X. Li, R. SivaSiva Ganesan, A. Klein & T. Weber, ”Maximizing the Sum Rate in Cellular Networks Using Multi-Convex Optimization, (opens in new tab) “ IEEE Transactions on Wireless Communications, vol. 15, pp. 3199-3211, May 2016.

M. Mousavi, S. Mueller, H. Al-Shatri, B. Freisleben & A. Klein, ”Multi-Hop Data Dissemination with Selfish Nodes: Optimal Decision and Fair Cost Allocation Based on the Shapley Value, (opens in new tab) “ in Proc. IEEE International Conference on Communications, Kuala Lumpur, Malaysia, May 2016.

S. Mueller, O. Atan, M. van der Schaar & A. Klein, ”Smart Caching in Wireless Small Cell Networks via Contextual Multi-Armed Bandits, (opens in new tab) “ in Proc. IEEE International Conference on Communications (ICC), Kuala Lumpur, Malaysia, May 2016.

A. Ortiz, H. Al-Shatri, X. Li, T. Weber & A. Klein, ”Reinforcement Learning for Energy Harvesting Point-to-Point Communications, (opens in new tab) “ in Proc. IEEE International Conference on Communications, Kuala Lumpur, Malaysia, May 2016.

X. Li, D. Papsdorf, A. Klein & T. Weber, ”An Interference Management Scheme using Partial CSI for Partially Connected Cellular Networks, (opens in new tab) “ in Proc. 20th International ITG Workshop on Smart Antennas (WSA), Munich, Germany, Mar 2016.

M. Mousavi, H. Al-Shatri, O. Hinz & A. Klein, ”Incorporating User Willingness for Message Forwarding in Multi-Hop Content Distribution Scenarios, (opens in new tab) " in Proc. 20th International ITG Workshop on Smart Antennas (WSA), Munich, Germany, Mar 2016.

2015

A. Buzuverov, H. Al Shatri & A. Klein, "On the Degrees of Freedom of the Three-User MIMO Interference Channel with Delayed CSIT, (opens in new tab) “ in Proc. IEEE Information Theory Workshop, Jeju Island, Korea, Oct 2015.

A. Loch, M. Hollick, A. Kühne & A. Klein, ”OFDMA for wireless multihop networks: From theory to practice, (opens in new tab) “ Pervasive and Mobile Computing, vol. 23, pp. 104-121, Oct 2015.

A. Frömmgen, S. Sadasivam, S. Müller, A. Klein & A. Buchmann, ”Poster: Use your Senses: A Smooth Multipath TCP WiFi/Mobile Handover,“ in Proc. 21st Annual International Conference on Mobile Computing and Networking MobiCom, Paris, France, Sep 2015.

D. Kifle, B. Wegmann, F. Tesema, I. Viering & A. Klein, ”Enhancing Vertical Sectorization Performance with eICIC in AAS Based LTE-A Deployment, (opens in new tab) “ in Proc. IEEE 82nd Vehicular Technology Conference: VTC, Boston, USA, Sep 2015.

D. Papsdorf, X. Li, T. Weber & A. Klein, ”Interference Alignment in Partially Connected Multi-User Two-Way Relay Networks, (opens in new tab) “ in Proc. IEEE 26th Annual International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC, Hong Kong, China, Aug 2015.

A. Ortiz, H. Al Shatri, X. Li, T. Weber & A. Klein, ”Throughput Maximization in Two-Hop Energy Harvesting Communications, (opens in new tab) “ in Proc. IEEE Twelfth International Symposium on Wireless Communication Systems ISWCS, Brussels, Belgium, Aug 2015.

S. Müller, H. Al Shatri, M. Wichtlhuber, D. Hausheer & A. Klein, ”Computation Offloading in Wireless Multi-Hop Networks: Energy Minimization via Multi-Dimensional Knapsack Problem, (opens in new tab) “ in Proc. IEEE 26th Annual International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC, Hong Kong, China, Aug 2015.

M. Mousavi, H. Al Shatri, H. Q. Le, A. Kühne, M. Wichtlhuber, D. Hausheer & A. Klein, ”Game-based Multi-hop Broadcast Including Power Control and MRC in Wireless Networks, (opens in new tab) “ in Proc. IEEE 26th Annual International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC, Hong Kong, China, Aug 2015.

M. Mousavi, H. Al Shatri, M. Wichtlhuber, D. Hausheer & A. Klein, ”Energy-Efficient Data Dissemination in Ad Hoc Networks: Mechanism Design with Potential Game, (opens in new tab) “ in Proc. IEEE Twelfth International Symposium on Wireless Communication Systems ISWCS, Brussels, Belgium, Aug 2015.

X. Li, D. Papsdorf, A. Klein & T. Weber, ”An Interference Alignment Scheme using Partial CSI for Large Partially Connected Relay Networks, (opens in new tab) “ in Proc. IEEE Twelfth International Symposium on Wireless Communication Systems ISWCS, Brussels, Belgium, Aug 2015.

F. Hohmann, A. Kühne, A. Klein, A. Loch & M. Hollick, ”Corridor-based Routing: Constructing and Maintaining Stable Support-Structures for Wireless Multihop Transmissions, (opens in new tab) “ in Proc. IEEE Twelfth International Symposium on Wireless Communication Systems ISWCS, Brussels, Belgium, Aug 2015.

M. Fasil, H. Al Shatri, S. Wilk & A. Klein, ”Application-Aware Cross-Layer Framework: Video Content Distribution in Wireless Multihop Networks, (opens in new tab) “ in Proc. IEEE 26th Annual International Symposium on Personal, Indoor and Mobile Radio Communications PIMRC, Hong Kong, China, Aug 2015.

M. Wichtlhuber, S. Dargutev, S. Müller, A. Klein & D. Hausheer, ”QTrade: A Quality of Experience Based Peercasting Trading Scheme,“ in Proc. IEEE International Conference on Peer-to-Peer Computing P2P, Cambridge, USA, Aug 2015.

N. Franzen, ”Spectrally Efficient Beaconing for Aeronautical Applications, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Jul 2015.

W. Kifle, B. Wegmann, I. Viering & A. Klein, ”Study on Impact of Vertical Sectorization on Mobility and Existing MRO Performance, (opens in new tab) “ in Proc. European Conference on Networks and Communications EuCNC, Paris, France, Jun 2015.

M. Wichtlhuber, M. Mousavi, H. Al Shatri, A. Klein & D. Hausheer, ”Towards a Framework for Cross Layer Incentive Mechanisms for Multihop Video Dissemination, (opens in new tab) “ in Proc. IEEE 16th International Symposium on a World of Wireless, Mobile and Multimedia Networks WoWMoM, Boston, MA, USA, Jun 2015.

D. Papsdorf, A. Klein, X. Li & T. Weber, ”Interference alignment for high rate transmission in partially connected multi-user two-way relay networks:, (opens in new tab) “ in Proc. 25. Sitzung der ITG-Fachgruppe Angewandte Informationstheorie, Hamburg, Germany, Apr 2015.

A. Schad, S. Alabed, H. Degenhardt & M. Pesavento, ”Bi-Directional Differential Beamforming for Multi-Antenna Relaying, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, Apr 2015.

X. Li, T. Weber, D. Papsdorf & A. Klein, ”A relay-aided interference alignment scheme using partial CSI, (opens in new tab) “ in Proc. 25. Sitzung der ITG-Fachgruppe Angewandte Informationstheorie, Hamburg, Germany, Apr 2015.

R. SivaSiva Ganesan, ”Relay-aided interference alignment for bi-directional communications in wireless networks, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Mar 2015.

W. Sarhan, ”Receiver-based Protection against Time-varying Noise in xDSL Systems, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Mar 2015.

A. Ortiz, H. Degenhardt & A. Klein, ”A Resource Requirement Aware Transmit Strategy for Non-Regenerative Multi-Way Relaying, (opens in new tab) “ in Proc. IEEE Wireless Communication and Networking Conference (WCNC), New Orleans, USA, Mar 2015.

X. Li, H. Al Shatri, R. Ganesan, D. Papsdorf, A. Klein & T. Weber, ”Uplink-Downlink Duality of Interference Alignment in Cellular Relay Networks, (opens in new tab) “ in Proc. 10th International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, Germany, Feb 2015.

A. Kuehne, H. Q. Le and M. Mousavi, M. Wichtlhuber, D. Hausheer & A. Klein, ”Power Control in Wireless Broadcast Networks using Game Theory, (opens in new tab) “ in Proc. 10th International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, Germany, Feb 2015.

K. Schmitz, P. Hasselbach, B. Ebisch, A. Klein, G. Pipa & R. Galuske, ”Application of Parallel Factor Analysis (PARAFAC) to Electrophysiological Data, (opens in new tab) " frontiers in Neuroinformatics, vol. 8, Jan 2015.

2014

H. Degenhardt, "Non-Regenerative Multi-Antenna Two-Way and Multi-Way Relaying, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Nov 2014.

D. Kifle, L. Gimenez, B. Wegmann & A. Klein, ”Comparison and extension of Existing 3D Propagation Models with Real-World Effects Based on Ray-Tracing, (opens in new tab) “ Wireless Personal Communications, vol. 78, pp. 1719-1738, Oct 2014.

A. Loch, P. Quesada, M. Hollick, A. Kühne & A. Klein, ”Building Cross-Layer Corridors in Wireless Multihop Networks, (opens in new tab) “ in Proc. IEEE International Conference on Mobile Ad hoc and Sensor Systems MASS, Philadelphia, USA, Oct 2014.

A. Loch, M. Hollick, A. Kühne & A. Klein, ”Practical OFDMA for Corridor-based Routing in Wireless Multihop Networks, (opens in new tab) “ in Proc. Local Computer Networks Conference (LCN), Edmonton, Canada, Sep 2014 (Best Paper Award).

Z. Chen, A. Kuehne & A. Klein, ”Randomized Gossip Protocol in Wireless Sensor Networks with Partial Sensor Involvement, (opens in new tab) “ in Proc. IEEE Eleventh International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, Aug 2014.

M. Fasil, A. Kühne & A. Klein, ”Node Virtualization and Network Coding: Optimizing Data Rate in Wireless Multicast, (opens in new tab) “ in Proc. IEEE Eleventh International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, Aug 2014.

D. Kifle, B. Wegmann, I. Viering & A. Klein, ”Mathematical Model for Vertical Sectorization (VS) in AAS Based LTE Deployment, (opens in new tab) “ in Proc. IEEE Eleventh International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, Aug 2014 (Best Paper Award).

A. Kuehne, A. Loch, T. Nitsche, J. Widmer, M. Hollick & A. Klein, ”BER Enhancements for Practical Interference Alignment in the Frequency Domain, (opens in new tab) “ in Proc. IEEE Eleventh International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, Aug 2014.

X. Li, H. Al-Shatri, R. SivaSiva Ganesan, D. Papsdorf, A. Klein & T. Weber, ”Relay-Aided Interference Alignment for Multiple Partially Connected Subnetworks, (opens in new tab) “ in Proc. 11th International Symposium on Wireless Communications Systems (ISWCS), Barcelona, Spain, Aug 2014.

D. Papsdorf, R. SivaSiva Ganesan, X. Li, T. Weber & A. Klein, ”Combining Interference Alignment and Two-Way Relaying in Partially Connected Networks with only Local CSI, (opens in new tab) “ in Proc. IEEE Eleventh International Symposium on Wireless Communication Systems (ISWCS), Barcelona, Spain, Aug 2014.

D. Kifle, L. Gimenez, B. Wegmann & A. Klein, ”Comparison and extension of Existing 3D Propagation Models with Real-World Effects Based on Ray-Tracing, (opens in new tab) “ Wireless Personal Communications, Jul 2014.

D. W. Kifle, B. Wegmann, P. Eskelinen, I. Viering & A. Klein, ”Super-Cell From Inner Sectors of Active Antenna System (AAS) – Vertical Sectorization, (opens in new tab) “ in Proc. IEEE International Conference on Communications (ICC), Sydney, Australia, Jun 2014.

A. Loch, T. Nitsche, A. Kühne, M. Hollick, J. Widmer & A. Klein, ”Practical Interference Alignment in the Frequency Domain for OFDM-based Wireless Access Networks, (opens in new tab) “ in Proc. 15th IEEE International Syposium on a World of Wireless, Mobile and Multimedia Networks, Sydney, Australia, Jun 2014 (Best Paper Award).

A. Loch, M. Hollick, A. Kühne & A. Klein, ”Corridor-based Routing: Opening Doors to PHY-Layer Advances for Wireless Multihop Networks, (opens in new tab) “ in Proc. 15th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, Sydney, Australia, Jun 2014 (Best Poster Award).

R. Ganesan, H. Al Shatri, X. Li, T. Weber & A. Klein, ”Multi-Group Multi-Way relaying with Reduced Number of Relay Antennas, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Florence, Italy, May 2014.

W. Sarhan, M. Küppers & A. Klein, ”Optimization of the per tone noise protection in xdsl Systems employing virtual noise, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Florence, Italy, May 2014.

A. Awada, ”Inter-RAT Mobility Robustness Optimization in Self-Organizing Networks, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Mar 2014.

Z. Chen, A. Kühne & A. Klein, ”Improved Bias Cancellation and Header Communication for Random Gossiping-based Static Wireless Sensor Networks, (opens in new tab) " in Proc. Workshop on Smart Antennas WSA, Erlangen, Germany, Mar 2014.

to 2013

2013

W. Sarhan & A. Klein, "Optimization of the Rate Adaptation Procedures in xDSL Systems, (opens in new tab) “ in Proc. International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), St. Martin, Dec 2013.

H. Degenhardt & A. Klein, ”Known-Interference Aware Iterative MMSE Filter Design for Non-Regenerative Multi-Way Relaying, (opens in new tab) “ in Proc. IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), Saint Martin, Dec 2013.

H. Degenhardt, Y. Rong & A. Klein, ”Non-Regenerative Multi-Way Relaying: Combining the Gains of Network Coding and Joint Processing, (opens in new tab) “ IEEE Transactions on Wireless Communications, vol. 12, no. 11, pp. 5692-5703, November 2013., vol. 12, pp. 5692-5703, Nov 2013.

H. Al-Shatri, X. Li, R. SivaSiva Ganesan, A. Klein & T. Weber, ”Multi-Convex Optimization for Sum Rate Maximization in Multiuser Relay Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communication (PIMRC), London, UK, Sep 2013.

D. Kifle, B. Wegmann, I. Viering & A. Klein, ”On The Potential of Traffic Driven Tilt Optimization in LTE-A Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communication (PIMRC), London, UK, Sep 2013.

S. Alabed, M. Pesavento & A. Klein, ”Distributed Differential Space-Time Coding for Two-Way Relay Networks using Analog Network Coding, (opens in new tab) “ in Proc. European Signal Processing Conference (EUSIPCO), Marrakech, Maroco, Sep 2013.

S. Alabed, M. Pesavento & A. Klein, ”Relay Selection based Space-Time Coding for Two-Way Wireless Relay Networks using Digital Network Coding, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS), Ilmeneau, Germany, Aug 2013.

C. Chen, A. Kühne & A. Klein, ”Multi-hop Coordination in Gossiping-based Wireless Sensor Networks, (opens in new tab) " in Proc. International Symposium on Wireless Communication Systems ISWCS, Ilmenau, Germany, Aug 2013.

R. Ganesan, H. Al-Shatri, A. Kühne, T. Weber and A. Klein, „Pair-aware Interference Alignment in Multi-user Two-way Relay Networks, (opens in new tab) “ IEEE Transactions on Wireless Communications, vol. 12, no. 8, pp. 3662-3671, August 2013

X. Li, H. Al-Shatri, R. S. Ganesan, A. Klein & T. Weber, "Interference Alignment Aided by Locally Connected Relays, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS), Ilmenau, Germany, Aug 2013.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”A Location-based Self-Optimizing Algorithm for the Inter-RAT Handover Parameters, (opens in new tab) “ in Proc. IEEE International Conference on Communications (ICC), Budapest, Hungary, Jun 2013.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”A SON-Based Algorithm for the Optimization of Inter-RAT Handover Parameters, (opens in new tab) “ IEEE Transactions on Vehicular Technology, vol. 62, pp. 1906-1923, Jun 2013.

Z. Chen, A. Kühne & A. Klein, ”Reducing Aggregation Bias and Time in Gossiping-based Wireless Sensor Networks, (opens in new tab) “ in Proc. IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Darmstadt, Germany, Jun 2013.

C. Fritsche, A. Klein & F. Gustafsson, ”Bayesian Cramér-Rao Bound for Mobile Terminal Tracking in Mixed LOS/NLOS Environments, (opens in new tab) “ IEEE Wireless Communications Letters, vol. 2, pp. 335-338, Jun 2013.

R. S. Ganesan, H. Al-Shatri, T. Weber & A. Klein, ”Relay-aided interference alignment for bidirectional communications in multi-pair multi-relay networks, (opens in new tab) “ in Proc. IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Darmstadt, Germany, Jun 2013.

A. Loch, M. Hollick, T. Nitsche, J. Widmer, A. Kuehne & A. Klein, ”CSI Feedback in OFDMA Wireless Networks with Multiple Transmitter-Receiver Pairs, (opens in new tab) “ in Proc. IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC'13), Darmstadt, Germany, Jun 2013.

A. Loch, R. Klose, M. Hollick, A. Kühne & A. Klein, ”Practical OFDMA in Wireless Networks with Multiple Transmitter-Receiver Pairs, (opens in new tab) “ in Proc. IEEE Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM'13), Madrid, Spain, Jun 2013 (Best Demo Award).

H. Al-Shatri, X. Li, R. S. Ganesan, A. Klein & T. Weber, ”Closed-Form Solutions for Minimizing Sum MSE in Multiuser Relay Networks, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Dresden, Germany, Jun 2013.

H. Degenhardt & A. Klein, ”A Network Coding Approach to Non-Regenerative Multi-Antenna Multi-Group Multi-Way Relaying, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Dresden, Germany, Jun 2013.

R. S. Ganesan, H. Al-Shatri, T. Weber & A. Klein, ”Iterative MMSE filter design for multi-pair two-way multi-relay networks, (opens in new tab) “ in Proc. IEEE International Conference on Communications, Budapest, Hungary, Jun 2013.

X. Li, H. Al-Shatri, R. S. Ganesan, A. Klein & T. Weber, ”Feasibility Conditions for Relay-Aided Interference Alignment in Partially Connected Networks, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Dresden, Germany, Jun 2013.

R. S. Ganesan, H. Q. Le, H. Al-Shatri, T. Weber & A. Klein, ”Closed form solution and useful signal power maximization for interference alignment in multi-pair two-way relay networks, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference, Shanghai, China, Apr 2013.

A. Kuehne, A. Loch, M. Hollick & A. Klein, ”Node Selection for Corridor-based Routing in OFDMA Multihop Networks, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference, Shanghai, China, Apr 2013.

E. Veshi, A. Kuehne & A. Klein, ”Comparison of different multicast strategies in wireless identically distributed channels, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference, Shanghai, China, Apr 2013.

H. Degenhardt, F. Hohmann & A. Klein, ”A Hybrid Approach Combining Non-Regenerative MIMO Two-Way Relaying and Direct Link Transmission, (opens in new tab) “ in Proc. ITG Workshop on Smart Antennas, Stuttgart, Germany, Mar 2013.

D. Kifle, B. Wegmann, I. Viering & A. Klein, ”Impact of Antenna Tilting on Propagation Shadowing Model, (opens in new tab) “ in Proc. IEEE International Vehicular Technology Conference, Dresden, Germany, Mar 2013.

A. Kuehne, A. Loch, M. Hollick & A. Klein, ”Spatial reuse in OFDMA multi-hop networks applying corridor-based routing, (opens in new tab) “ in Proc. ITG Workshop on Smart Antennas, Stuttgart, Germany, Mar 2013.

S. Alabed, M. Pesavento & A. Klein, ”Non-coherent distributed space-time coding techniques for two-way wireless relay networks, (opens in new tab) “ EURASIP Journal on Advances in Signal Processing: Special Issue on Sensor Array Processing, vol. 2013, Jan 2013.

2012

N. Franzen, ”Comparison of Coordinated and Uncoordinated PHY/MAC Schemes for Beaconing, (opens in new tab) “ in Proc. IEEE Digital Avionics Systems Conference DASC, Williamsburg, VA, USA, Oct 2012.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”Cell-Pair Specific Optimization of the Inter-RAT Handover Parameters in SON, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Sydney, Australia, Sep 2012.

H. Degenhardt, F. Hohmann & A. Klein, ”Pilot Transmission Scheme and Robust Filter Design for Non-Regenerative Multi-Pair Two-Way Relaying, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Radio Mobile Communications, Sydney, Australia, Sep 2012.

R. SivaSiva Ganesan, H. Al-Shatri, T. Weber & A. Klein, ”Cooperative Zero Forcing in Multi-Pair Multi-Relay Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Sydney, Australia, Sep 2012.

A. Kühne, A. Klein, A. Loch & M. Hollick, ”Corridor-based Routing using Opportunistic Forwarding in OFDMA Multihop Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Sydney, Australia, Sep 2012.

H. Al-Shatri, R. SivaSiva Ganesan, A. Klein & T. Weber, ”Perfect versus Imperfect Interference Alignment using Multiple MIMO Relays, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems, Paris, France, Aug 2012.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”Performance Comparison of Signal Strength and Signal Quality Baser Inter-RAT MRO, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems, Paris, France, Aug 2012.

Z. Chen, A. Kühne & A. Klein, ”Delay Constraints for Multiple Applications in Wireless Sensor Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems, Paris, France, Aug 2012.

H. Degenhardt & A. Klein, ”Hybrid one-/two-way transmission scheme for bidirectional multi-user relaying under asymmetric rate requirements, (opens in new tab) “ in Proc. International OFDM Workshop (INOWo), Essen, Germany, Aug 2012.

A. Kühne, A. Klein, A. Loch & M. Hollick, ”Opportunistic forwarding in multi-hop OFDMA networks with local CSI, (opens in new tab) “ in Proc. 17th International OFDM Workshop, Essen, Germany, Aug 2012.

D. Würtz, A. Klein & M. Kuipers, ”Distributed Margin Optimization Using Spectrum Balancing in Multi-user DSL Systems, (opens in new tab) “ in Proc. 20th European Signal Processing Conference, Bucharest, Romania, Aug 2012.

T. Kürner, P. Grazioso, A. Eisenblätter, G. de la Roche, F. Velez, A. Hecker, M. Toril, M. Wagrowski, M. Garcia-Lozano & P. Hasselbach, ”Deployment, Optimisation and Operation of Next Generation Networks,“ in Pervasive Mobile and Ambient Wireless Communications – Cost Action 2100, R. Verdone and A. Zanella (Eds.), chapter 10, pp. 407-459, Springer Verlag, Cost, Signals and Communication Technology, no. ISBN 978-1-4471-2314-9, 2012.

A. Kühne & A. Klein, ”Hybrid adaptive/non-adaptive multi-user OFDMA systems in the presence of user-specific imperfect channel knowledge, (opens in new tab) “ EURASIP Journal on Wireless Communications and Networking, vol. 2012:207, Jul 2012.

W. Sarhan, A. Klein & M. Kuipers, ”Jointly Optimizing the Virtual Noise Mask and the SNR Margin for improved Service in xDSL Systems, (opens in new tab) “ in Proc. IEEE International Conference on Communications, Ottawa, Canada, Jun 2012.

H. Al-Shatri, R. SivaSiva Ganesan, A. Klein & T. Weber, ”Interference Alignment Using a MIMO Relay and Partially-Adapted Transmit/Receive Filters, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference, Paris, France, Apr 2012.

H. Degenhardt & A. Klein, ”Self-interference aware MIMO filter design for non-regenerative multi-pair two-way relaying, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference, Paris, France, Apr 2012.

P. Hasselbach, ”Capacity Optimization for Self-organizing Networks: Analysis and Algorithms, (opens in new tab) “ Ph.D. Thesis, Technische Universität Darmstadt, Darmstädter Dissertationen D17, Apr 2012.

Z. Chen, A. Kühne A. Klein, Adrian Loch, Matthias Hollick & Joerg Widmer, ”Two-Way Relaying for Multiple Applications in Wireless Sensor Networks, (opens in new tab) “ in Proc. 16th International ITG Workshop on Smart Antennas WSA 2012, Dresden, Germany, Mar 2012.

H. Degenhardt & A. Klein, ”Filter design with optimized numbers of data streams for multi-pair two-way relaying under asymmetric rate requirements, (opens in new tab) “ in Proc. 16th International ITG Workshop on Smart Antennas WSA 2012, Dresden, Germany, Mar 2012.

2011

A. Klein, A. Zoubir, S. Ulbrich, H. Degenhardt, F. Suratman & A. Kühne, ”Herausforderungen zukünftiger Mobilkommunikation,“ Forschen, Nr. 2, pp. 64-69, Nov 2011.

T. Maciel, R. dos Santos & A. Klein, ”Centralized Scheduling for CoMP,“ in Coordinated Multi-Points in Mobile Communications; from Theory to Practice, P. Marsch and G. Fettweis (Eds.), pp. 243-254, Cambridge University Press, no. ISBN 978-1-107-00411-5, 2011.

A. Sohl & A. Klein, ”Semiblind Channel Estimation for IFMDA in Case of Channels with Large Delay Spread, (opens in new tab)EURASIP Journal on Advances in Signal Processing, vol. 2011, 2011.

A. Amah & A. Klein, ”Non-Regenerative Multi-Way Relaying: Space-Time Analog Network Coding and Repetition, (opens in new tab)IEEE Communications Letters, vol. 15, pp. 1362-1364, Dec 2011.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”Self-Optimization Algorithm for Inter-Rat Configuration Parameters, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems, Aachen, Germany, Nov 2011.

H. Degenhardt, T. Unger & A. Klein, ”Self-interference aware MMSE filter design for a cellular multi-antenna two-way relaying scenario, (opens in new tab) “ in Proc. Proceedings of the Eighth International Symposium on Wireless Communication Systems ISWCS, Aachen, Germany, Nov 2011.

R. SivaSiva Ganesan & A. Klein, ”Projection based Space-Frequency Interference Alignment in a Multi-Carrier Multi-User Two-Way Relay Network, (opens in new tab) “ in Proc. Proceedings of the Eighth International Symposium on Wireless Communication Systems ISWCS, Aachen, Germany, Nov 2011.

I. Viering, B. Wegmann, A. Lobinger, A. Awada & H. Martikainen, ”Mobility Robustness optimization beyond Doppler Effect and WSS Assumption, (opens in new tab) “ in Proc. IEEE International Symposium on Wireless Communication Systems, Aachen, Germany, Nov 2011.

A. Awada, B. Wegman, I. Viering & A. Klein, ”Optimizing Radio Network Parameters of Long Term Evolution System Using Taguchi's Method, (opens in new tab)IEEE Transactions on Vehicular Technology., vol. 60, pp. 3825-3839, Oct 2011.

S. Gligorevic, N. Schneckenburger, N. Franzen & M. Schell, ”L-band Compatibility of LDACS1, (opens in new tab) “ in Proc. CEAS Air and Space Conference, Venezia, Italy, Oct 2011.

N. Schneckenburger, N. Franzen, S. Gligorevic & M. Schell, ”L-band Compatibility of LDACS1, (opens in new tab) “ in Proc. IEEE Digital Avionics Systems Conference, San Francisco, USA, Oct 2011.

A. Amah & A. Klein, ”Regenerative Multi-Group Multi-Way Relaying, (opens in new tab)IEEE Transactions on Vehicular Technology, vol. 60, pp. 3017-3029, Sep 2011.

A. Kühne & A. Klein, ”Consideration of inaccurate outdating parameters in adaptive OFDMA, (opens in new tab) “ in Proc. 16th International OFDM-Workshop InOWo'11, Hamburg, Germany, Sep 2011.

D. Würtz, A. Klein & M. Kuipers, ”Hybrid Rate and Power Adaptive Distributed Spectrum Optimization for DSL Systems (opens in new tab) “ in Proc. 16th International OFDM-Workshop InOWo'11, Hamburg, Germany, Sep 2011.

O. Bulakei, A. Awada, A. Bou Saleh, S. Redana, J Hamalainen, B. Wegman & B. Raaf, ”Joint Optimization of Uplink Power Control Parameters in LTE-Advanced Relay Networks, (opens in new tab) “ in Proc. IEEE International Wireless Communications and Mobile Computing Conference, Istanbul, Turkey, Jul 2011.

A. Amah & A. Klein, ”Non-Regenerative Multi-Antenna Multi-Group Multi-Way Relaying, (opens in new tab)Eurasip Journal on Wireless Communications and Networking, vol. 2011, Jul 2011.

A. Awada, B. Wegman, D. Rose, I. Viering & A. Klein, ”Towards Self-Organizing Mobility Robustness Optimzation in Inter-RAT Scenario, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Budapest, Hungary, May 2011.

A. Awada, B. Wegman, I. Viering & A. Klein, ”A Joint Optimization of Antenna Parameters in a Cellular Network Using Taguchi's Method, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Budapest, Hungary, May 2011.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”A Mathematical Model for User Traffic in Coverage and Capacity Optimization of a Cellular Network, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Taipeh, Taiwan, May 2011.

N. Franzen, ”Advanced Aloha with SIC for Beaconing in a MANET, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Budapest, Hungary, May 2011.

R. SivaSiva Ganesan, T. Weber & A. Klein, ”Interference Alignment in Multi-User Two-Way Relay Networks (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Budapest, Hungary, May 2011.

A. Kühne & A. Klein, ”Combination of Adaptive and Non-Adaptive Multi-User OFDMA Schemes in the Presence of User-Dependent Imperfect CSI,“ in OFDM – Concepts for Future Communications Systems, H. Rohling (Eds.), pp. 142-145, Springer Verlag, no. ISBN: 978-3-642-17495-7, 2011.

H. Degenhardt & A. Klein, ”Non-regenerative multi-antenna two-hop relaying under an asymmetric rate constraint, (opens in new tab) “ in Proc. IEEE Wireless Communications and Networking Conference (WCNC 2011), Cancun, Mexico, Mar 2011.

C. Fritsche, ”Statistical Data Fusion for Hybrid Localization of Mobile Terminals, (opens in new tab) “ Mar 2011 (Darmstädter Dissertationen D17).

A. Kühne, ”Analysis of hybrid adaptive/non-adaptive multi-user OFDMA systems with imperfect channel knowledge, (opens in new tab) “ Mar 2011 (Darmstädter Dissertationen D17).

A. Amah, ”Multi-Antenna Multi-Group Multi-Way Relaying, (opens in new tab) “ Feb 2011 (Darmstädter Dissertationen D17) (GSC Award 2013).

A. Sohl, ”Pilot Assisted and Semiblind Channel Estimation for Interleaved Frequency Division Multiple Access and the Generalization for Block Interleaved Frequency Division Multiple Access, (opens in new tab) “ January 2011 (Darmstädter Dissertationen D17).

2010

K. Schmitz, P. P. Hasselbach, B. Ebisch, M. Nakano Daniel, G. Pipa, A. Klein & R. A. W. Galuske, ”Application of parallel factor analysis to electrophysiological data, (opens in new tab)Neuroscience Meeting Planner, San Diego, CA, 2010.

M. Schnell, N. Franzen & S. Gligorevic, ”L-DACS1 Laboratory Demonstrator Development and Compatibility Measurement Set-up, (opens in new tab) “ in Proc. IEEE Digital Avionics Systems Conference, Salt Lake City, USA, Oct 2010.

M. Walter, N. Franzen & M. Schnell, ”New Concepts for a Decentralized, Self-Organizing Air-to-Air Radio Link, (opens in new tab) “ in Proc. IEEE Digital Avionics System Conference, Salt Lake City, USA, Oct 2010.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”A Game-Theoretic Approach to Load Balancing in Cellular Radio Networks, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Instanbul, Turkey, Sep 2010.

A. Awada, I. Viering, B. Wegman & A. Klein, ”Application of Game-Theory for Load Balancing in Long Term Evolution Networks, (opens in new tab)Frequenz Journal of RF-Engineering and Telecommunications, vol. 64, pp. 180-184, Sep/Oct 2010.

P. P. Hasselbach, A. Klein, I. Gaspard, D. von Hugo & E. Bogenfeld, ”Performance Evaluation of Self-optimising Mobile Radio Networks in Realistic Scenarios,“ Frequenz Journal of RF-Engineering and Telecommunications, vol. 64, pp. 164-168, Sep/Oct 2010.

D. Würtz, A. Klein & M. Kuipers, ”Crosstalk channel estimation in xDSL systems based on SINR variations, (opens in new tab) “ in Proc. 15th International OFDM-Workshop (InOwo), Hamburg, Germany, Sep 2010.

D. Würtz, A. Klein & M. Kuipers, ”Seamless Transition of Power Allocation in Multi-User xDSL Systems, (opens in new tab) “ in Proc. 18th European Signal Processing Conference (EUSIPCO), Aalborg, Denmark, Sep 2010.

A. Fernekess, ”Low-Complexity Performance Evaluation Methodologies for OFDMA-based Packet-Switched Wireless Networks, (opens in new tab) “ August 2010 (Darmstädter Dissertationen D17).

A. Amah & A. Klein, ”Beamforming-based Physical Layer Network Coding for Non-Regenerative Multi-Way Relaying, (opens in new tab)EURASIP Journal on Wireless Communications and Networking (special issue: Physical Layer Network Coding for Wireless Cooperative Networks), vol. 2010, Jul 2010.

C. Fritsche & A. Klein, ”Nonlinear Filtering for Hybrid GPS/GSM Mobile Terminal Tracking, (opens in new tab)International Journal of Navigation and Observation, vol. 2010, Jun 2010.

A. Awada, I. Viering & A. Klein, ”A Mathematical Model for User Traffic in Coverage and Capacity Optimization of a Cellular Network, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference, Taipeh, Taiwan, May 2010.

N. Franzen, A. Arkhipov & M. Schell, ”L-DACS1 Physical Layer Laboratory Demonstrator, (opens in new tab) “ in Proc. IEEE Integrated Communications Navigation and Surveillance Conference, Washington DC, USA, May 2010.

T. Frank, ”Block-Interleaved Frequency Division Multiple Access and its Application in the Uplink of Future Mobile Radio Systems, (opens in new tab) “ May 2010 (Darmstädter Dissertationen D17).

A. Sohl & A. Klein, ”Comparison of different channel estimation approaches for Block-IFDMA, (opens in new tab)European Transactions on Telecommunications Special Issue on MC CDMA, vol. 21, 2010.

A. Amah & A. Klein, ”Multi-Group Multi-Way Relaying: When Analog Network Coding Finds Its Transceive Beamforming (opens in new tab) ,“ in Proc. Wireless Communications and Networking Conference, Sydney, Australia, Apr 2010.

A. Amah & A. Klein, ”Pair-Aware Transceive Beamforming for Non-Regenerative Multi-User Two-Way Relaying, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing, Dallas, U.S.A., Mar 2010.

A. Amah, T. Frank & A. Klein, ”On Combining SDMA and B-IFDMA: Multi-User Detection and Channel Estimation, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Bremen, Germany, Feb 2010.

A. Awada, B. Wegmann, I. Viering & A. Klein, ”A Game Theoretic Analysis of Load Balancing,“ ITG-Fachgruppe Mobilität in IP-basierten Netzen, Darmstadt, Germany, Feb 2010.

H. Degenhardt, D. Czepluch, F. Demmel & A. Klein, ”Consideration of Sectors for Direction of Arrival Estimation with Circular Arrays, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Bremen, Germany, Feb 2010.

P. Hasselbach, A. Klein, D. von Hugo & E. Bogenfeld, ”Interference in Radio Resource Management: A Comparison of Coordinated and Uncoordinated Approaches, (opens in new tab)ITG Fachgruppe Mobilität in IP-basierten Netzen, Darmstadt, Germany, Feb 2010.

A. Kuehne & A. Klein, ”Transmit Antenna Selection and OSTBC in adaptive multiuser OFDMA systems with different user priorities and imperfect CQI, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Bremen, Germany, Feb 2010.

C. Müller, ”Distributed Resource Allocation in OFDMA-Based Relay Networks, (opens in new tab) “ Feb 2010 (Darmstädter Dissertationen D17).

Y. Zhang, ”Downlink Adaptive Resource Allocation for a Multi-user MIMO OFDM System with and without Fixed Relays, (opens in new tab) “ Feb 2010 (Darmstädter Dissertationen D17).

T. Maciel & A. Klein, ”On the Performance, Complexity and Fairness of Suboptimal Resource Allocation for Multi-User MIMO-OFDMA Systems, (opens in new tab)IEEE Transactions on Vehicular Technology, vol. 59, pp. 406-419, Jan 2010.

2009

A. Amah & A. Klein, ”A Transceive Strategy for Regenerative Multi-Antenna Multi-Way Relaying, (opens in new tab) “ in Proc. IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), Aruba, Dutch Antilles, Dec 2009.

C. Fritsche, T. B. Schön & A. Klein, ”The Marginalized Auxiliary Particle Filter, (opens in new tab) “ in Proc. 3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, Aruba, Dutch Antilles, Dec 2009.

Y. Silva & A. Klein, ”Linear Transmit Beamforming Techniques for the multi-group multicast Scenario, (opens in new tab)IEEE Transactions on Vehicular Technology, vol. 58, pp. 4353-4367, Oct 2009.

A. Amah & A. Klein, ”Non-Regenerative Multi-Way Relaying with Linear Beamforming, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Tokyo, Japan, Sep 2009.

A. Fernekeß, A. Klein, B. Wegmann & K. Dietrich, ”Analysis of Cellular Mobile Networks using Fair Throughput Scheduling, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Tokyo, Japan, Sep 2009.

P. Hasselbach, A. Klein, I. Gaspard, D. von Hugo & E. Bogenfeld ”Performance Analysis of Dynamic Radio Resource Allocation for Self-organising Cellular Mobile Radio Networks, (opens in new tab)COST 2100 TD(09)937, Vienna, Austria, Sep 2009.

P. Hasselbach, A. Klein & I. Gaspard, ”Transmit Power Allocation for Self-organising Future Cellular Mobile Radio Networks, (opens in new tab) “ in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Tokyo, Japan, Sep 2009.

A. Kühne, A. Klein, X. Wei & T. Weber, ”Consideration of signaling overhead in adaptive Multi-user OFDMA/TDD Systems, (opens in new tab) “ in Proc. 14th International OFDM-Workshop (InOWo), Hamburg, Germany, Sep 2009.

A. Sohl & A. Klein, ”Channel Estimation for IFDMA -- Comparison of Semiblind Channel Estimation Approaches and Estimation with Interpolation Filtering, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Tokyo, Japan, Sep 2009.

D. Würtz, A. Klein, M. Kuipers & W. Kozek, ”Crosstalk cancellation for xDSL with restricted access to lines, (opens in new tab) “ in Proc. 14th International OFDM-Workshop (InOWo), Hamburg, Germany, Sep 2009.

C. Fritsche & A. Klein, ”On the Performance of Mobile Terminal Tracking in Urban GSM Networks using Particle Filters, (opens in new tab) “ in Proc. European Signal Processing Conference (EUSIPCO), Glasgow, Scottland, Aug 2009.

T. Svensson, T. Frank, T. Eriksson, M. Sternad & A. Klein, ”Block Interleaved Frequency Division Multiple Access for Power Efficiency, Robustness, Flexibility and Scalability, (opens in new tab)EURASIP Journal on Wireless Communications and Networking, (special issue: ”3GPP LTE and LTE Advanced“), vol. 2009, pp. 18, Aug 2009 (EURASIP JWCN/720973).

S. Berger, T. Unger, M. Kuhn, A. Klein & A. Wittneben, ”Recent Advances in Amplify-and-Forward Two-Hop Relaying, (opens in new tab)IEEE Communications Magazine, vol. 47, pp. 50-56, Jul 2009.

A. Fernekeß, A. Klein, B. Wegmann & K. Dietrich, ”Estimating Cell Throughput of OFDMA Systems with Scheduling, (opens in new tab) “ in Proc. International Wireless Communications and Mobile Computing Conference, Leipzig, Germany, Jun 2009.

C. Fritsche & A. Klein, ”On the Performance of Hybrid GPS/GSM Mobile Terminal Tracking, (opens in new tab) “ in Proc. International Workshop on Synergies in Communications and Localization (ICC), Dresden, Germany, Jun 2009.

P. Hasselbach, A. Klein & I. Gaspard, ”Self-organising Radio Resource Management for Cellular Mobile Radio Networks using Power-Bandwidth Characteristics, (opens in new tab) “ in Proc. ICT-MobileSummit, Santander, Spain, Jun 2009.

P. Hasselbach, A. Klein & I. Gaspard, ”Radio Resource Allocation based on Power-Bandwidth Characteristics for Self-optimising Cellular Mobile Radio Networks, (opens in new tab)ITG-Fachgruppe Mobilität in IP-basierten Netzen, Klagenfurt, Austria, Jun 2009.

T. Unger, ”Multiple-Antenna Two-Hop Relaying for bi-directional Transmission in Wireless Communication Systems, (opens in new tab) “ Jun 2009 (Darmstädter Dissertationen D17).

A. Fernekeß, A. Klein, B. Wegmann & K. Dietrich, ”Semi-analytical Cell Throughput Estimation of OFDMA Systems with Scheduling based on SINR distributions, (opens in new tab)COST2100 TD(09)806, Valencia, Spain, May 2009.

A. Kühne & A. Klein, ”Adaptive multiuser OFDMA Systems with high Priority Users in the Presence of Imperfect CQI, (opens in new tab) “ in Proc. 7th International Workshop on Multi-Carrier Systems & Solutions (MC-SS), Herrsching, Germany, May 2009.

A. Sohl & A. Klein, ”Iterative Channel Estimation versus Estimation with Interpolation Filters, (opens in new tab) “ in Proc. International Workshop on Multi-carrier Systems & Solutions, Herrsching, Germany, May 2009.

C. Fritsche, U. Hammes, A. Klein & A. Zoubir, ”Robust Mobile Terminal Tracking in NLOS Environments using Interacting Multiple Model Algorithm, (opens in new tab) “ in Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Taipei, Taiwan, Apr 2009.

X. Wei, T. Weber, A. Kühne & A. Klein, ”Joint Transmission with imperfect partial channel state information, (opens in new tab) “ in Proc. IEEE Vehicular Technology Conference (VTC), Barcelona, Spain, Apr 2009.

A. Fernekeß, A. Klein, B. Wegmann & K. Dietrich, ”Modular System Level Simulator Concept for OFDMA Systems, (opens in new tab)Communications Magazine, vol. 47, pp. 150-156, Mar 2009.

C. Fritsche, A. Klein & D. Würtz, ”Hybrid GPS/GSM Localization of Mobile Terminals using the Extended Kalman Filter, (opens in new tab) “ in Proc. 6th Workshop on Positioning, Navigation and Communication, Hannover, Germany, Mar 2009.

A. Klein, A. Sohl & T. Frank, ” Block-IFDMA: A Generalization of IFDMA-Properties and Channel Estimation,“ Single Carrier FDMA Workshop, New York. U.S.A., Mar 2009 (Invited).

A. Sohl, ”Channel Estimation for B-IFDMA-Interpolation Filters versus Decision Directed Estimation, (opens in new tab)Single Carrier FDMA Workshop, New York, U.S.A., Mar 2009 (Invited).

A. Amah, A. Klein, Y. Silva & A. Fernekess, ”Multi-Group Multicast Beamforming for Multi-User Two-Way Relaying, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Berlin, Germany, Feb 2009.

A. Kuehne, ”Kombination adaptiver und nicht-adaptiver OFDMA-Übertragungsverfahren bei nicht perfekter Kanalkenntnis, (opens in new tab)DFG Kolloquium, Erlangen, Germany, Feb 2009.

B. Song, M. Haardt, T. Maciel & A. Klein, ”Multi-User MIMO Downlink Precoding for Time Variant Correlated Channels, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Berlin, Germany, Feb 2009.

2008

T. Maciel & A. Klein, ”Resource Allocation Strategies for SDMA/OFDMA Systems,“ in Advances in Mobile and Wireless Communications, István Frigyes and János Bitó and Péter Bakki (Eds.), chapter 6, pp. 115-121. Budapest, Hungary: Springer Verlag, Lecture Notes in Electrical Engineering, no. ISBN 978-3-540-79040-2, 2008.

P. Hasselbach, A. Klein & I. Gaspard, ”Measurement Based Cell Bandwidth Allocation in Cellular Mobile Radio Networks using Power-Bandwidth Characteristics, (opens in new tab)COST 2100 TD(08)609, Lille, France, Okt 2008.

A. Kuehne & A. Klein, ”Throughput Analysis of Multi-user OFDMA-Systems using imperfect CQI feedback and diversity Techniques, (opens in new tab)IEEE Journal on Selected Areas in Communications, vol. 26, pp. 1440-1451, Oct 2008.

C. Müller, ”Inter-Cell Interference Mitigation in Cellular Networks Applying Grids of Beams, (opens in new tab)ITG-Fachgruppe Angewandte Informationstheorie, Berlin, Germany, Oct 2008.

P. Hasselbach, A.Klein & M. Siebert, ”Interdependence of Transmit Power and Cell Bandwidth in Cellular Mobile Radio Networks, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Cannes, France, Sep 2008

T. Maciel, ”Suboptimal Resource Allocation for Multi-User Mimo-OFDMA Systems, (opens in new tab) “ Sep 2008 (Darmstädter Dissertationen D17).

A. Sohl & A. Klein, ”Blind Channel Estimation based on Second Order Statistics for IFDMA, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Cannes, France, Sep 2008.

T. Unger & A. Klein, ”Maximum Sum Rate for Non-regenerative Two-way Relaying in Systems of Different Complexities, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Cannes, France, Sep 2008 (invited).

C. Müller, A. Klein & B. Raaf, ”A Coordinated Resource Allocation Algorithm for Infrastructure-Based Relay Networks, (opens in new tab)EURASIP Journal on Advances in Signal Processing, (special issue: ”Cross-Layer Design for the Physical, MAC, and Link Layer in Wireless Systems“), vol. 2009, pp. 17, Aug 2008 (Article ID 630964).

A. Kühne, A. Klein, X. Wei & T. Weber, ”Transmit Antenna Selection with imperfect CQI feedback in OFDMA systems (opens in new tab) ,“ in Proc. 13th International OFDM-Workshop, Hamburg, Germany, Aug 2008.

X. Wei, T. Weber, A. Kühne & A. Klein, ”Optimum MMSE Detection with Correlated Random Noise Variance in OFDM Systems, (opens in new tab) “ in Proc. 13th International OFDM-Workshop, Hamburg, Germany, Aug 2008.

P. Hasselbach, A. Klein & M. Siebert, ”Evaluation of Self-x Approaches for Mobile Radio Networks using Cell Level Simulations, (opens in new tab)ITG-Fachgruppe Mobilität in IP-basierten Netzen, Stuttgart, Germany, Jun 2008.

A. Fernekeß, A. Klein, B. Wegmann, K. Dietrich & M. Litzka, ”Load Dependent Interference Margin for Link Budget Calculations of OFDMA Networks, (opens in new tab)IEEE Communications Letters, vol. 12, pp. 398-400, May 2008.

T. Frank, A. Klein & T. Haustein, ”A Survey on the Envelope Fluctuations of DFT Precoded OFDMA Signals, (opens in new tab) “ in Proc. International Conference on Communications (ICC), Beijing, China, May 2008.

P. Hasselbach, A. Klein & I. Gaspard, ”Dynamic Resource Assignment (DRA) with Minimum Outage in Cellular Mobile Radio Networks, (opens in new tab) “ in Proc. Vehicular Technology Conference, Singapore, May 2008.

P. Hasselbach & A. Klein, ”An Analytical Model for Outage Probability and Bandwidth Demand of the Downlink in Packet Switched Cellular Mobile Radio Networks, (opens in new tab) “ in Proc. International Conference on Communications, Beijing, China, May 2008.

T. Unger & A. Klein, ”Duplex schemes in multiple-antenna two-hop relaying, (opens in new tab)EURASIP Journal on Advances in Signal Processing,(special issue: ”Multihop-Based Cellular Networks“), vol. 2008, pp. 14, May 2008 (Article ID 128592).

C. Fritsche & A. Klein, ”Cramer-Rao Lower Bounds for Hybrid Localization of Mobile Terminals, (opens in new tab) “ in Proc. Workshop on Positioning, Navigation and Communication, Hannover, Germany, Mar 2008.

P. Hasselbach, A. Klein & I. Gaspard, ”Dynamic Resource Assignment (DRA) with Minimum Outage in Cellular Mobile Radio Networks, (opens in new tab)COST 2100 TD(08)429, Wroclaw, Poland, Feb 2008.

A. Kühne & A. Klein, ”Adaptive MIMO-OFDM using OSTBC with imperfect CQI feedback, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Darmstadt, Germany, Feb 2008.

T. Maciel & A. Klein, ”A Perfomance Complexity Analysis of four Suboptimal SDMA Algorithms, (opens in new tab) “ in Proc. International ITG Workshop on Smart Antennas, Darmstadt, Germany, Feb 2008.

Y. Silva, ”Adaptive beamforming and power allocation in multi-carrier multicast wireless networks, (opens in new tab) “ Mar 2008 (Darmstädter Dissertationen D17).

2007

A. Klein, A. Gershman, R. Jakoby, P. Meissner, R. Steinmetz, A. Zoubir, L. Cirillo, K. Kastell & T. Unger, ”Kommunikationstechnik – Wachstumsmotor der Zukunft,“ Thema Forschung, pp. 32-37, 2007.

R. Steinmetz, A. Gershman, M. Hollick, W. Johannsen & A. Klein, ”Ubiquitär verfügbare Kommunkationsdienste,“ Thema Forschung, pp. 28-32, 2007.

C. Fritsche, A. Klein, H. Schmitz & M. Pakulski, ”A hybrid localization method for mobile station location estimation, (opens in new tab) “ in Proc. ITG Fachgruppe für angewandte Informationstheorie, Munich, Germany, Oct 2007.

A. Fernekeß, A. Klein, B. Wegmann, K. Dietrich & E. Hamburg, ”Performance of IEEE 802.16.e OFDMA in tight reuse scenarios, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, Sep 2007.

T. Frank, A. Klein & E. Costa, ”An efficient implementation for block IFDMA, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, Sep 2007.

A. Kühne & A. Klein, ”Adaptive subcarrier allocation with imperfect channel knowledge versus diversity techniques in a multi-user OFDM-system, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, Sep 2007.

Y. Silva & A. Klein, ”Analysis of linear and non-linear precoding techniques for the spatial separation of unicast and multicast users, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, Sep 2007.

A. Sohl & A. Klein, ”Comparison of localized, interleaved and block-interleaved FDMA in terms of pilot multiplexing and channel estimation, (opens in new tab) “ in Proc. 15th European Signal Processing Conference, Pozan, Poland, Sep 2007 (Invited).

T. Unger & A. Klein, ”Applying Relay Stations with Multiple Antennas in the One- and Two-Way Relay Channel, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Athens, Greece, Sep 2007 (invited).

A. Kühne & A. Klein, ”An analytical consideration of quantised CSI feedback on the performance of a multi-user OFDM-system, (opens in new tab) “ in Proc. 12th International OFDM-Workshop (InOWo), Hamburg, Germany, Aug 2007.

C. Müller, A. Klein, F. Wegner & M. Kuipers, ”Dynamic subcarrier, bit an power allocation in OFDMA-based relay networks, (opens in new tab) “ in Proc. International OFDM-Workshop, Hamburg, Germany, Aug 2007.

T. Maciel & A. Klein, ”A resource allocation strategy for SDMA/OFDMA systems, (opens in new tab) “ in Proc. IST Mobile and Wireless Communications Summit, Budapest, Hungary, Jul 2007.

Y. Silva & A. Klein, ”Downling beamforming and SINR balancing for the simultaneous provision of unicast/multicast services, (opens in new tab) “ in Proc. IST Mobile and Wireless Communications Summit, Budapest, Hungary, Jul 2007.

T. Svensson, T. Frank, D. Falconer, M. Sternad, E. Costa & A. Klein, ”B-IFDMA – A power efficient multiple access scheme for non-frequency-adaptive transmission, (opens in new tab) “ in Proc. IST Mobile and Wireless Communications Summit, Budapest, Hungary, Jul 2007.

T. Unger & A. Klein, ”Linear transceive filters for relay stations with multiple antennas in the two-way relay channel, (opens in new tab) “ in Proc. IST Mobile and Wireless Communications Summit, Budapest, Hungary, Jul 2007.

T. Unger & A. Klein, ”On the performance of two-way relaying with multiple-antenna relay stations, (opens in new tab) “ in Proc. IST Mobile and Wireless Communications Summit, Budapest, Hungary, Jul 2007.

T. Frank, A. Klein & E. Costa, ”IFDMA – a scheme combining the advantages of OFDMA and CDMA, (opens in new tab)IEEE Wireless Communications Magazine,(special issue ”Next Generation CDMA vs. OFDMA for 4G Wireless Applications“), Jun 2007.

T. Maciel & A. Klein, ”A convex quadratic SDMA grouping algorithm based on spatial correlation, (opens in new tab) “ in Proc. International Conference on Communications, Glasgow, Scotland, Jun 2007.

Y. Silva & A. Klein, ”Power allocation in multi-carrier networks with unicast and multicast services, (opens in new tab) “ in Proc. International Conference on Communications, Glasgow, Scotland, Jun 2007.

A. Sohl, T. Frank & A. Klein, ”Channel estimation for block-IFDMA, (opens in new tab) “ in Proc. International Workshop on Multi-carrier Spread Spectrum, Herrsching, Germany, May 2007.

T. Unger & A. Klein, ”On the performance of distributed space-time block codes, (opens in new tab)IEEE Communications Letters, vol. 11, No. 5, pp. 411-413, May 2007.

T. Maciel & A. Klein, ”Resource Allocation in SDMA/OFDMA Systems, (opens in new tab)ITG-Fachgruppe Angewandte Informationstheorie, Berlin, Germany, Apr 2007.

C. Müller, A. Klein, F. Wegner & M. Kuipers, ”Costs and performance of non-cooperative relay networks, (opens in new tab) “ in Proc. European Wireless Conference, Paris, France, Apr 2007.

T. Unger & A. Klein, ”Two-way relaying with multiple-antenna relay station, (opens in new tab)ITG-Fachgruppe Angewandte Informationstheorie, Berlin, Germany, Apr 2007.

A. Fernekeß, A. Klein, B. Wegmann & K. Dietrich, ”Influence of high priority users on the system capacity of mobile networks, (opens in new tab) “ in Proc. Wireless Communications and Networking Conference, Hong Kong, Mar 2007.

G. Kang, P. Hasselbach, Y. Yang, P. Zhang & A. Klein, ”Pilot design for inter-cell interference mitigation in MIMO OFDM systems, (opens in new tab)IEEE Communication Letters, vol. 11, pp. 237-239, Mar 2007.

T. Maciel & A. Klein, ”On the performance of SDMA with soft dropping and SINR balancing power control in the downlink of multi-user MIMO systems, (opens in new tab) “ in Proc. International ITG/IEEE Workshop on Smart Antennas, Vienna, Austria, Feb 2007.

T. Unger & A. Klein, ”On the performance of relay stations with multiple antennas in the two-way relay channel, (opens in new tab)COST2100 TD (07) 006, Lisbon, Portugal, Feb 2007.

C. Müller, A. Klein & F. Wegner, ”Coverage extension of WiMax using multihop in a low user density environment, (opens in new tab)Frequenz, vol. 61, pp. 3-6, Jan/Feb 2007.

2006

C. Fritsche, A. Klein & H. Schmitz, ”Mobile station localization by combining measurements from different sources including reliability information, (opens in new tab) “ in Proc. ITG Mobility, Aachen, Germany, Oct 2006.

T. Maciel & A. Klein, ”A low-complexity SDMA grouping strategy for the downlink of multi-user MIMO systems, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, Finland, Sep 2006.

Y. Silva & A. Klein, ”Adaptive antenna techniques applied to multicast services in wireless networks, (opens in new tab)Frequenz, vol. 60, pp. 199-202, Sep/Oct 2006.

Y. Silva & A. Klein, ”Adaptive beamforming and spatial multiplexing of unicast and multicast services, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, Finland, Sep 2006.

T. Unger & A. Klein, ”Cooperative MIMO relaying with distributed space-time block codes, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, Finland, Sep 2006.

C. Müller, A. Klein & F. Wegner, ”Coverage extention of WiMax using multihop in a low user density environment, (opens in new tab) “ in Proc. International OFDM-Workshop, Hamburg, Germany, Aug 2006.

A. Sohl, T. Frank & A. Klein, ”Channel estimation for DFT precoded OFDMA with blockwise and interleaved subcarrier allocation, (opens in new tab) “ in Proc. 11th International OFDM-Workshop, Hamburg, Germany, Aug 2006.

T. Unger, C. Müller & A. Klein, ”Resource allocation schemes for infrastructure based relay, (opens in new tab) “ in Proc. International OFDM-Workshop, Hamburg, Germany, Aug 2006.

A. Fernekeß, A. Klein, B. Wegman & K. Dietrich, ”Influence of traffic models and scheduling on the system capacity of packet-switched mobile radio networks, (opens in new tab) “ in Proc. IST Mobile & Wireless Communications Summit, Mykonos, Greece, Jun 2006.

M. Herdin & T. Unger, ”Performance of infrastructure SISO and MIMO amplify and forward relays in a Manhattan street grid scenario, (opens in new tab) “ in Proc. IST Mobile & Wireless Communications Summit, Mykonos, Greece, Jun 2006.

T. Frank, A. Klein, E. Costa & A. Kühne, ”Low complexity and power efficient space-time-frequency coding for OFDMA, (opens in new tab) “ in Proc. IST Mobile & Wireless Communications Summit, Mykonos, Greece, Jun 2006.

M. Meurer, T. Weber & A. Klein, ”Hybrid localization with temporal post-processing, (opens in new tab)Frequenz, vol. 60, pp. 99-102, May/Jun 2006.

T. Unger & A. Klein, ”Radio resource assignment in infrastructure relay networks, (opens in new tab)ITG-Fachgruppe Angewandte Informationstheorie, Munich, Germany, May 2006.

T. Frank, A. Klein & E. Costa, ”Low complexity multi carrier multiple access with cyclic delay diversity, (opens in new tab) “ in Proc. International ITG/IEEE Workshop on Smart Antennas, Ulm, Germany, Mar 2006.

Y. Silva & A. Klein, ”Multicast transmission performance improvement through adaptive antenna arrays, (opens in new tab) “ in Proc. Karlsruhe Workshop on Software Radios, pp. 177-182, Karlsruhe, Germany, Mar 2006.

2005

C. F. Ball, F. Treml, X. Gaube & A. Klein, ”Performance analysis of temporary removal scheduling applied to mobile WiMax scenarios in tight frequency reuse,“ in Proc. International Symposium on Personal Indoor and Mobile Radio Communications, vol. 2, pp. 888-894, Berlin, Germany, Sep 2005.

T. Frank, A. Klein, E. Costa & E. Schulz, ”Low complexity equalization with and without decision feedback and its application to IFDMA, (opens in new tab) “ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, vol. 2, pp. 1219-1223, Berlin, Germany, Sep 2005.

T. Frank, A. Klein, E. Costa & E. Schulz, ”IFDMA – a promising multiple access scheme for future mobile radio systems, (opens in new tab) “ in Proc. International Symposium on Personal Indoor and Mobile Radio Communications, vol. 2, pp. 1214-1218, Berlin, Germany, Sep 2005.

R. Elliott, A. Arkhipov, R. Raulefs & W.A. Krzymien, ”Effective SINR mapping for an MC-CDMA system,“ in Proc. International Workshop on Multi-Carrier Spread Spectrum, pp. 361-370, Oberpfaffenhofen, Germany, Sep 2005.

T. Frank, A. Klein, E. Costa & E. Schulz, ”Interleaved orthogonal frequency division multiple access with variable data rates, (opens in new tab) “ in Proc. International OFDM-Workshop, pp. 179-183, Hamburg, Germany, Aug/Sep 2005.

2004

T. Detert & A. Fernekeß, ”Joint MSE channel estimation within the current GSM/EDGE standard, (opens in new tab) “ in Proc. Vehicular Technology Conference, vol. 5, pp. 3822-3827, Los Angeles, USA, Sep 2004.

T. Frank, A. Klein, E. Costa & E. Schulz, ”Robustness of IFDMA as air interface candidate for future high rate mobile radio systems, (opens in new tab) “ in Proc. Kleinheubacher Tagung, pp. 265-207, Miltenberg, Germany, Sep/Oct 2004.

J. Freese, C. Müller, M. Schüßler & R. Jakoby, ”Semi-circular array antennas for DOA-estimation and beamforming, (opens in new tab) “ in Proc. IEEE APS/URSI Symposium on Antennas and Propagation, vol. 1, pp. 415-418, Monterey, USA, Jun 2004.

I. Cosovic, A. Arkhipov & M. Schnell, ”Pre-equalization in combination with transmit diversity for OFDMA code-division multiplexing systems in fading channels," in Proc. Vehicular Technology Conference, vol. 4, pp. 1854-1858, Milan, Italy, May 2004.

2003

A. Klein, “Trends in der Mobilkommunikation,” VDE-Vorträge, Bezirk Kurpfalz, Landesmuseum für Technik und Arbeit, Mannheim, Jun 2003.

2002

A. Klein, “UMTS – Mobilkommunikation der 3. Generation,” VDE-Seminar University of Kaiserslautern, Kaiserslautern, Jul 2002.

2001

M. Purat, A. Klein, R. Köhn, V. Sommer, T. Ulrich, M. Haardt & S. Oestreich, “Die UTRA-TDD-Funkschnittstelle, Teil 2: Die physikalische Übertragungsschicht und deren Systemparameter,”telekom praxis, vol. 78, pp. 21-26, Jun 2001.

M. Purat, A. Klein, R. Köhn, V. Sommer, T. Ulrich, M. Haardt & S. Oestreich, “Die UTRA-TDD-Funkschnittstelle, Teil 1: Grundlegendes zu Systemarchitektur und Funktion,”telekom praxis, vol. 78, pp. 25-31, May 2001.

2000

P. W. Baier, T. Bing & A. Klein, TD-CDMA,“ in Third generation mobile communication systems, R. Prasad and W. Mohr and W. Konhäuser (Eds.), chapter 2, pp. 25-72. Boston, London: Artech House, 2000.

M. Haardt, A. Klein, R. Köhn, S. Oestreich, M. Purat, V. Sommer & T. Ulrich, ”The TD-CDMA based UTRA TDD mode,“IEEE Journal on Selected Areas in Communications, vol. 18, pp. 1375-1385, Aug 2000.

1999

M. Haardt, A. Klein, W. Mohr & J. Schindler, ”Overview of the UTRA TDD physical layer description,“ in Proc. FRAMES Workshop, Delft, 1999.

P. W. Baier & A. Klein, CDMA with multi-user detection,” in COST Action 231: Digital mobile radio towards future generation systems – final report, E. Damosso and L. M. Correia (Eds.), chapter 6.5, pp. 331-334. Luxembourg: Office for Official Publications of the European Communities, 1999.

P. W. Baier, J. J. Blanz, P. Jung, A. Klein, M. M. Naßhan, A. Steil & B. Steiner, Joint detection CDMA,“ in COST Action 231: Digital mobile radio towards future generation systems – final report, E. Damosso and L. M. Correia (Eds.), chapter 7.4, pp. 400-409. Luxembourg: Office for Official Publications of the European Communities, 1999.

M. Haardt, A. Klein, W. Mohr & J. Schindler, ”The physical layer of the TD-CDMA based UTRA TDD mode,“ in Proc. ACTS Mobile Communications Summit, Sorrento, Jun 1999.

1998

J. Schindler, G. Herbster, A. Klein & M. Haardt, ”TDD performance evaluation,“ in Proc. International Symposium on Wireless Personal Multimedia Communications, Yokosuka, Nov 1998.

A. Klein, T. Kreul, J. Schindler, P. Slanina & J. Castro, ”Performance of FRAMES multiple access mode 1 with spreading – TD/CDMA,“ in Proc. ACTS Mobile Communications Summit, pp. 333-338, Rhodes, Jun 1998.

A. Klein, T. Kreul & P. Slanina, ”FRAMES multiple access mode 1 with spreading – TD/CDMA,“ in Proc. International Symposium on Wireless Communications, Montreal, May 1998.

E. Nikula, A.Toskala, E. Dahlman, L. Girard & A. Klein, ”FRAMES multiple access for UMTS and IMT-2000,“IEEE Personal Communications, pp. 16-24, Apr 1998.

1997

A. Klein, R. Pirhonen, J. Sköld & R. Suoranta, ”FRAMES multiple access Mode 1 – wideband TDMA with and without spreading,“ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, Sep 1997.

F. Ovesjö, E. Dahlman, T. Ojanperä, A. Toskala & A. Klein, ”FRAMES multiple access Mode 2 – wideband CDMA,“ in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, Helsinki, Sep 1997.

A. Klein, ”Data detection algorithms specially designed for the downlink of CDMA mobile radio systems,“ in Proc. Vehicular Technology Conference, Phoenix, May 1997.

T. Ojanperä, A. Klein & P.-O. Anderson, ”FRAMES multiple access for UMTS,“ in Proc. IEE Electronics and Communications Division Professional Group E8 (Radiocommunication Systems) Colloquium on ”CDMA Techniques and Applications for Third Generation Mobile Systems“, pp. 7/1-7/8, London, May 1997.

T. Ojanperä, J. Sköld, J. Castro, L. Girard & A. Klein, ”Comparison of multiple access schemes for UMTS,“ in Proc. Vehicular Technology Conference, Phoenix, May 1997.

1996

A. Klein, Multi user detection of CDMA Signals algorithms and their application to cellular mobile radio,” in Multi-user detection of CDMA signals – algorithms and their application to cellular mobile radio. Düsseldorf: VDI-Verlag, Fortschrittberichte VDI, series 10, no. 423, 1996.

A. Klein, B. Steiner & A. Steil, “Known and novel diversity approaches as a powerful means to enhance the performance of cellular mobile radio systems,”IEEE Journal on Selected Areas in Communications, vol. 14, pp. 1784-1795, Dec 1996.

T. Ojanperä, P.-O. Anderson, J. Castro, L. Girard, A. Klein & R. Prasad, “Comparative study of hybrid multiple access schemes for UMTS,” in Proc. ACTS Mobile Communications Summit, pp. 124-130, Granada, Nov 1996.

C. Math, A. Klein, W. Mohr & P. W. Baier, “Charakterisieren der Richtungsinhomogenität gemessener Kanalimpulsantworten,” in Proc. , Zurich, Oct 1996.

J. Blanz, A. Klein & W. Mohr, “Measurement-based parameter adaptation of wideband spatial mobile radio channel models,” in Proc. International Symposium on Spread Spectrum Techniques and Applications, pp. 91-97, Mainz, Sep 1996.

A. Klein & W. Mohr, “A statistical wideband mobile radio channel model including the directions-of-arrival,” in Proc. International Symposium on Spread Spectrum Techniques and Applications,, pp. 102-106, Mainz, Sep 1996.

T. Ojanperä, J. Castro, D. Emmer, M. Gudmudson, P. Jung, A. Klein, G. Krämer, R. Pirhonen, L. Rademacher, J. Sköld & A. Toskala, “FRAMES – Hybrid multiple access technology,” in Proc. International Symposium on Spread Spectrum Techniques and Applications, pp. 320-324, Mainz, Sep 1996.

A. Klein, G. Kawas Kaleh & P. W. Baier, “Zero forcing and minimum mean square error equalization for multi-user detection in code division multiple access channels,”IEEE Transactions on Vehicular Technology, vol. 45, pp. 276-287, May 1996.

A. Klein, “Modellieren und Vermessen von Mobilfunkkanälen,” VDE-Seminar, University of Kaiserslautern, Kaiserslautern, May 1996.

P. W. Baier, A. Klein, W. Mohr, R. Thomas, P. Weber & B. Wirth, “Verfahren zum richtungsauflösenden, breitbandigen Bestimmen von Mobilfunk-Kanalimpulsantworten durch Messung und Nachverarbeitung,” in Proc. ITG-Diskussionssitzung “Antennen für mobile Systeme”, pp. 149-152, Starnberg, Apr 1996.

A. Klein, W. Mohr, R. Thomas, P. Weber & B. Wirth, “Richtungsauflösende, breitbandige Ausbreitungsmessungen als Basis für die Bewertung intelligenter Antennenkonzepte für Mobilfunksysteme,” in Proc. ITG-Diskussionssitzung “Antennen für mobile Systeme”, pp. 153-156, Starnberg, Apr 1996.

A. Klein, W. Mohr, R. Thomas, P. Weber & B. Wirth, “Direction-of-arrival of partial waves in wideband mobile radio channels for intelligent antenna concepts,” in Proc. Vehicular Technology Conference, pp. 849-853, Atlanta, Apr/May 1996.

A. Klein, W. Mohr, R. Thomas, P. Weber & B. Wirth, “Richtungsauflösende, breitbandige Ausbreitungsmessungen zur Bewertung von Konzepten für intelligente Antennen,” ITG-Diskussionssitzung “Meßtechnik im Mobilfunk”, Reisensburg, Mar 1996.

P. W. Baier, P. Jung & A. Klein, “Taking the challenge of multiple access for third generation cellular mobile radio systems – a European view,”IEEE Communications Magazine, vol. 34, pp. 82-89, Feb 1996.

1995

P. W. Baier, J. Blanz, P. Jung, A. Klein, M. Naßhan, A. Steil & B. Steiner, “Draft of section 7.4: Joint detection CDMA (to be included in the final report),”COST 231 TD(95)103, Poznan, Sep 1995.

P. W. Baier, J. Blanz, P. Jung, A. Klein, M. Naßhan, A. Steil & B. Steiner, “Topics for a COST 231 follow-on project,”COST 231 TD(95)129, Poznan, Sep 1995.

A. Klein, B. Steiner & A. Steil, “Known and novel diversity approaches in a JD-CDMA system concept developed within COST 231,” in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 512-516, Toronto, Sep 1995.

M. Naßhan, A. Steil, A. Klein & P. Jung, “Downlink cellular radio capacity of a joint detection CDMA mobile radio system,” in Proc. Vehicular Technology Conference, pp. 474-478, Chicago, Jul 1995.

P. W. Baier & A. Klein, “Flexible hybrid multiple access schemes for 3rd generation mobile radio systems,” Joint COST 227 / 231 Workshop on Mobile and Personal Communications, Florence, Apr 1995; in: E. del Re (Ed.), Mobile and Personal Communications. Proc. of the 2nd Joint COST 227 / 231 Workshop on Mobile and Personal Communications., pp. 31-43, Amsterdam: Elsevier Science, 1995.

A. Klein, B. Steiner & A. Steil, “A new view on diversity in JD-CDMA system concepts as compared with GSM,”COST 231 TD(95)17, Berne, Jan 1995.

A. Klein, J. Blanz, P. Jung, M. Naßhan, A. Steil, B. Steiner & P. W. Baier, “Summarizing review of a JD-CDMA third generation mobile radio system concept developed within COST 231 – Part 2,”COST 231 TD(95)18, Berne, Jan 1995.

1994

A. Klein, G. Kawas Kaleh & P. W. Baier, “Equalizers for multi-user detection in code division multiple access mobile radio systems,”Elektrotehniski Vestnik, vol. 61, pp. 243-251, 1994.

A. Klein, “Enhancing the TDMA/FDMA performance by diversity,” Workshop on Advances in Spread Spectrum Air Interfaces for 3rd Generation Personal Communications, Delft, Dec 1994.

A. Klein, “Modulation schemes for simultaneous transmission of data streams of different bit rates,”Electronics Letters, vol. 30, pp. 1744-1745, Oct 1994.

A. Klein, G. Kawas Kaleh & P. W. Baier, “Equalizers for multi-user detection in code division multiple access mobile radio systems,” in Proc. Vehicular Technology Conference, pp. 762-766, Stockholm, Jun 1994.

A. Klein, “Gemeinsame Detektion von CDMA-Signalen – Algorithmen und deren Anwendung im zellularen Mobilfunk,” Nachrichtentechnisches Seminar der Universität Kaiserslautern, Kaiserslautern, Jun 1994.

J. Blanz, A. Klein, M. Naßhan & A. Steil, “Performance of a cellular hybrid C/TDMA mobile radio system applying joint detection and coherent receiver antenna diversity,”IEEE Journal on Selected Areas in Communications, vol. 12, pp. 568-579, May 1994.

A. Klein, G. Kawas Kaleh & P. W. Baier, “Equalizers for multi-user detection in code division multiple access mobile radio systems,” COST 229 Workshop, Ljubljana, Apr 1994; in: J. F. Tasic (Ed.), Adaptive methods and emergent techniques for signal processing and communications, pp. 61-65, Ljubljana: Somaru, 1994.

J. Blanz, A. Klein, M. Naßhan & A. Steil, “Cellular spectrum efficiency of a joint detection CDMA mobile radio system,” International Zurich Seminar on Digital Communications, Zurich, Mar 1994; in: C. G. Günther (Ed.), Lecture Notes in Computer Science, vol. 783: Mobile communications, advanced systems and components, pp. 184-195, Berlin: Springer, 1994.

T. Felhauer, A. Klein & P. W. Baier, “A low-cost method for CDMA and other applications to separate non orthogonal signals,”IEEE Transactions on Communications, vol. 42, pp. 881-883, Feb/Mar/Apr 1994.

A. Klein & P. W. Baier, “On the capacity of discrete-time synchronous Gaussian CDMA and TDMA channels,”International Journal of Electronics and Communications, vol. 48, pp. 28-33, Jan 1994.

J. Blanz, A. Klein, M. Naßhan & A. Steil, “Capacity of a cellular CDMA mobile radio system applying joint detection,”COST 231 TD(94)2, Lisbon, Jan 1994.

1993

A. Klein & P. W. Baier, “Linear unbiased data estimation in mobile radio systems applying CDMA,”IEEE Journal on Selected Areas in Communications, vol. 11, pp. 1058-1066, Sep 1993.

A. Klein, M. Werner & T. Zimmermann, “CDMA mobile radio system with joint detection, TCM and exploitation of reliability information at the receiver,” in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 473-477, Yokohama, Sep 1993.

A. Klein, M. Werner & T. Zimmermann, “CDMA-Mobilfunkübertragungsverfahren mit Interferenzeliminierung, TCM und empfängerseitiger Ausnutzung von Zuverlässigkeitsinformation,” ITG-Fachtagung, Neu-Ulm, Sep 1993; in ITG-Fachbericht, vol. 124: Mobile Kommunikation, pp. 43-54, Berlin: VDE-Verlag, 1993.

P. W. Baier, T. Felhauer, A. Klein & A. Mämmelä, “Survey of linear block estimation algorithms for the detection of spread spectrum signals transmitted over frequency selective channels,”IEICE Transactions on Communications, vol. E76-B, pp. 825-834, Aug 1993.

1992

A. Klein & P. W. Baier, “Simultaneous cancellation of cross interference and ISI in CDMA mobile radio communications,” in Proc. International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 118-122, Boston, Oct 1992.

B. Steiner & A. Klein, “Kanal- und Datenschätzung in synchronen CDMA-Mobilfunksystemen mit Interferenzeliminierung,” Kleinheubacher Tagung, Kleinheubach, Oct 1992; in Kleinheubacher Berichte, vol. 36, pp. 253-269, 1993.

A. Klein, B. Steiner & P. W. Baier, “Kanal- und Datenschätzung in CDMA-Mobilfunksystemen mit vollständiger Eliminierung von Intersymbol- und Kreuzinterferenz,” ITG-Diskussionssitzung “CDMA in Mobilfunksystemen”, Nuremberg, Jun 1992.

A. Klein & P. W. Baier, “On the capacity of synchronous Gaussian CDMA and TDMA channels,”COST 231 TD(92)63, Leeds, Apr 1992.

A. Klein & P. W. Baier, “Optimum unbiased data estimation in mobile radio systems applying CDMA,” Workshop on Multi-User Communications, Essen, Mar 1992.

A. Klein & P. W. Baier, “Optimum unbiased data estimation in mobile radio systems applying CDMA,”COST 231 TD(92)16, Vienna, Jan 1992.

1991

P. W. Baier, P. Jung & A. Klein, “CDMA – ein günstiges Vielfachzugriffsverfahren für frequenzselektive und zeitvariante Mobilfunkkanäle,”Nachrichtentechnik Elektronik, vol. 41, pp. 223-227, Nov/Dec 1991.

P. W. Baier, P. Jung & A. Klein, “CDMA – ein günstiges Vielfachzugriffsverfahren für frequenzselektive und zeitvariante Mobilfunkkanäle,” ITG-Diskussionssitzung “Der Funkkanal bei flächendeckenden Funkdiensten und seine Auswirkungen auf digitale Übertragungsverfahren”, Darmstadt, Sep 1991.

A. Klein, “Der Systemvorschlag der Firma Qualcomm,” Arbeitssitzung “CDMA im Mobilfunk”, Kaiserslautern, Sep 1991.