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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 networks, molecular communications, and information-theoretic secure communications.
6G-MIMOLink – Massive MIMO Innovation for 6G Communications
The project develops scalable Massive MIMO access points based on smart pixel arrays to achieve ultra-high data rates and energy efficiency in the FR3 frequency band.
xG-RIC: Technology Transfer Hub for Medicine and Mobility of the Future
xG-RIC is conceived as a technology transfer hub with the goal of advancing key 6G technologies and systematically accelerating their transfer into industry and society. The focus lies on the close integration of research, technology development, and application-driven innovation in areas such as connected medicine and urban mobility, in cooperation with industrial partners, start-ups, and societal stakeholders.
xG-RIC targets major advances in core 6G enabling technologies, including (i) next-generation MIMO, (ii) integrated sensing and communication tailored to medical and smart city applications, and ii) network and edge intelligence, with a particular emphasis on the integration of Al and radio access. The objective is to develop market-ready technologies, including proof-of-concepts (PoCs) and contributions to international standardization (e.g., TU, 3GPP). The planned integration of these technologies into realistic test environments - especially in clinical settings - enables real-world validation and significantly accelerates technology.
The Nitride Technology Centre (NTC) is shaping the rise of nitride technologies such as micro-LEDs as the second pillar of microelectronics. A central component here is to realise the sustainability potential of nitride technology – high luminosity with low power consumption. Furthermore, GaN components should be brought together with conventional silicon microelectronics in order to combine performance and innovative strength and thereby open up completely new fields of application. The NTC operates interdisciplinary projects with a focus on the integration of nitride and silicon technology and their applications in, for example, optical neuromorphic networks for the artificial intelligence of tomorrow.
A. Khari, K. Ebrahimi, Z. Mehrzad, A. Pureslami, M. R. Mili, M. B. Mashhadi, E. A. Jorswieck, "Flexible Intelligent Metasurface in Aerial BD-RIS-Assisted Terahertz Communications System with RSMA", IEEE Wireless Communications Letters, vol. 15, pp. 5725 - 5729, Oct. 2026.
Y. Chen, Y. Fang, B. Peng, A. Huang, Q. Li, M. Chafii, E. A. Jorswieck, "Scalable Design for RIS-Assisted Multi-User Downlink System Empowered by RSMA under Partial CSI", IEEE Wireless Communications Letters, vol. 15, pp. 4613 - 4617, 2026.
B. Peng, B. Guo, K.-L. Besser, L. Kunz, Z. Li, R. Raghunath, A. Schmeink, E. A Jorswieck, G. Caire, H. V. Poor, "Distributed Unsupervised Learning for Combinatorial User Assignment in mmWave Cell-Free Massive MIMO with Graph Neural Networks", IEEE Trans. on Wireless Communications, vol. 25, pp. 18531 - 18546, 2026.
R. S. Yeganeh, H. Behroozi, M. J. Omidi, M. R. Mili, E. A. Jorswieck, S. Chatzinotas, "Enhancing Energy and Spectral Efficiency in IoT-Cellular Networks via Active SIM-Equipped LEO Satellites", IEEE Trans. on Communications, vol. 74, pp. 10400 - 10416, 2026.
D. Pohle, P.-H. Lin, F. M. Ferreira, E. A. Jorswieck, J. W. Czarske, "Joint optical phase retrieval and computing for secure networks using mode division multiplexing", Photonics Technology Letters, vol. 38, no. 21, Nov. 2026.
S. Dai, B. Peng, E: Tohidi, S. Maghsudi, E. Jorswieck, S. Stanczak, "Adaptive Change-Point Detection in S-RISnet-Assisted Wireless Networks", IEEE Transactions on Vehicular Technology, vol. 75, no. 6, pp. 10092 - 10107, June 2026.
Q. Liu, B. Peng, X. Liu, C. Xu, E. Jorswieck, H. Zhang, "Decentralized ISAC Service Modeling and Intelligent Scheduling Paradigm for 6G Low-altitude Aerial-V2X", IEEE Trans. on Wireless Communications, vol. 25, pp. 11367 - 11382, 2026.
A. Nouruzi, S. Sheikhzadeh, N. Mokari, P. Azmi, E. Jorswieck, M. Erol-Kantarci, "VoI-Guaranteed Task Computing for Massive IoT under Demand and Resource Uncertainties", IEEE Trans. on Communications, vol. 74, pp. 3937 - 3951, 2026.
Z. Ge, E. Jorswieck, "Reliability in Statistically Dependent Networks: Bounds, Linear Programming, Scalability", IEEE Trans. on Communications, vol. 74, pp. 2731 - 2746, 2026.
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.