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The research in the Information Theory and Communication Systems Group spans the whole cycle from fundamental information-theoretic research to system design and implementation on demonstrating platforms. The group performs research in the following three main areas:
The group headed by Prof. Eduard Jorswieck studies novel methods and tools from applied information theory, which are applied to analyse, optimize and design modern communications systems.
State-of-the-art and cutting-edge mathematical methods and tools are applied to systematically model, analyse and design modern communication systems, including cellular beyond 5G and 6G, wireless local and body area networks, molecular communications, and information-theoretic secure communications.
Cellular Communications Systems: Analysis and design of beyond 5G and 6G wireless communications, massive MIMO, mmWave, full duplex, dense heterogeneous interference networks. System architecture from PHY, MAC to network layer including network slicing, network function virtualization, scheduling, resource allocation, power control, beamforming, channel coding. Multimedia broadcast technologies in 5G and beyond. Novel technologies for higher reliability and coverage: multi-connectivity, relay-assisted communications, reconfigurable intelligent surfaces, optimization and reliability theory-based resource allocation.
Selected Publications:
M. Amiri, E. Vaezpour, S. Javadi, M. Robat Mili, M. Bennis and E. Jorswieck, "Resource Allocation in STAR-RIS-Aided SWIPT With RSMA via Meta-Learning," in IEEE Open Journal of the Communications Society, vol. 6, pp. 3806-3815, 2025, doi: 10.1109/OJCOMS.2025.3556484.
M. Soleymani, I. Santamaria, E. A. Jorswieck, R. Schober and L. Hanzo, "Optimization of the Downlink Spectral- and Energy- Efficiency of RIS-Aided Multi-User URLLC MIMO Systems," in IEEE Transactions on Communications, vol. 73, no. 5, pp. 3497-3513, May 2025, doi: 10.1109/TCOMM.2024.3480988.
Y. -F. Liu et al., "A Survey of Recent Advances in Optimization Methods for Wireless Communications," in IEEE Journal on Selected Areas in Communications, vol. 42, no. 11, pp. 2992-3031, Nov. 2024, doi: 10.1109/JSAC.2024.3443759.
Alternative scalable and infrastructure-less approaches for securing internet of things (IoT), optical multi-mode fiber and multi-hop networks: confidentiality by wiretap coding, secret key generation, authentication, differential privacy, anonymity, jamming attacks. Information-theoretic channel models include compound and arbitrarily varying wiretap and multi-user channels.
Selected Publications:
P. -H. Lin, P. Nowitzki, E. A. Jorswieck, D. Pohle and J. Czarske, "Secret Key Generation Over Multi-Mode Fiber: Channel Measurements, Key Rate Analysis, and System Implementation," in IEEE Open Journal of the Communications Society, vol. 6, pp. 3236-3250, 2025, doi: 10.1109/OJCOMS.2025.3549090.
M. R. Abedi, N. Mokari, M. R. Javan, H. Saeedi, E. A. Jorswieck and H. Yanikomeroglu, "Safety-Aware Age of Information (S-AoI) for Collision Risk Minimization in Cell-Free mMIMO Platooning Networks," in IEEE Transactions on Network and Service Management, vol. 21, no. 3, pp. 3035-3053, June 2024, doi: 10.1109/TNSM.2024.3382301.
C. R. Janda, M. Wiese, E. A. Jorswieck and H. Boche, "Arbitrarily Varying Wiretap Channels With Non-Causal Side Information at the Jammer," in IEEE Transactions on Information Theory, vol. 69, no. 4, pp. 2635-2663, April 2023, doi: 10.1109/TIT.2023.3245722.
Fundamental understanding of communications theoretic principles for massive multiple access in WiFi networks, resource allocation, power control, multi-user multi-armed bandits. Distributed non-convex optimization and game theoretic approaches. Statistical signal processing in wireless sensor networks, molecular and massive machine type communications.
Selected Publications:
I. Santamaria, M. Soleymani, E. Jorswieck and J. Gutiérrez, "Interference Minimization in Beyond-Diagonal RIS-Assisted MIMO Interference Channels," in IEEE Open Journal of Vehicular Technology, vol. 6, pp. 1005-1017, 2025, doi: 10.1109/OJVT.2025.3555425.
Y. Xu, E. G. Larsson, E. A. Jorswieck, X. Li, S. Jin and T. -H. Chang, "Distributed Signal Processing for Extremely Large-Scale Antenna Array Systems: State-of-the-Art and Future Directions," in IEEE Journal of Selected Topics in Signal Processing, vol. 19, no. 2, pp. 304-330, March 2025, doi: 10.1109/JSTSP.2025.3541386.
B. Peng et al., "RISnet: A Domain-Knowledge Driven Neural Network Architecture for RIS Optimization With Mutual Coupling and Partial CSI," in IEEE Transactions on Wireless Communications, vol. 24, no. 5, pp. 4469-4482, May 2025, doi: 10.1109/TWC.2025.3536178.
Since the beginning of 2022, the MIMO prototyping system has been used to design, measure and test algorithms for distributed multi-antenna systems.
The parameters of the MIMO prototyping system are:
- 48 antennas at base station, 3 receivers with 2 antennas each
- Bandwidth up to 160 MHz in the flexible frequency range up to 6 GHz
- Source code for PHY and MAC
- Adaptation of modulation and coding schemes
- Precoding, beamforming, Successive Interference Cancellation
- Real-time operation
- Symbol-synchronous transmission
Trials and experiments (ongoing)
- Measurements and verification of channel distributions (Copula).
E. Jorswieck, M. Weber, P. Schlegel and K. -L. Besser, "On Massive Antenna Channel Models with Dependent Fading: Theory and Experiments," 2024 19th International Symposium on Wireless Communication Systems (ISWCS), Rio de Janeiro, Brazil, 2024, pp. 1-6, doi: 10.1109/ISWCS61526.2024.10639145.
- Multi-party beamforming concepts in the downlink (using modern information-theoretic methods)
B. Clerckx et al., "A Primer on Rate-Splitting Multiple Access: Tutorial, Myths, and Frequently Asked Questions," in IEEE Journal on Selected Areas in Communications, vol. 41, no. 5, pp. 1265-1308, May 2023, doi: 10.1109/JSAC.2023.3242718.
- Cooperative Multi-Point Transmission (Joint Transmission) with NOMA in Downlink
S. Rezvani, E. A. Jorswieck, R. Joda and H. Yanikomeroglu, "Optimal Power Allocation in Downlink Multicarrier NOMA Systems: Theory and Fast Algorithms," in IEEE Journal on Selected Areas in Communications, vol. 40, no. 4, pp. 1162-1189, April 2022, doi: 10.1109/JSAC.2022.3143237.
- Verification of symmetrizability of arbitrary varying channels
C. R. Janda, M. Wiese, E. A. Jorswieck and H. Boche, "Arbitrarily Varying Wiretap Channels With Non-Causal Side Information at the Jammer," in IEEE Transactions on Information Theory, vol. 69, no. 4, pp. 2635-2663, April 2023, doi: 10.1109/TIT.2023.3245722.