In the following, you will find information on the invited talks, special sessions and demo sessions.

Invited Keynotes

Multidimensional Constellation Shaping for Nonlinear Fiber Optics

Dr. Alex Alvarado, Eindhoven University of Technology

Geometric and probabilistic signal shaping techniques have promised to squeeze the last fraction of a dB out of nonlinear optical fiber links. This talk will focus on one technique to achieve these gains, namely, the use of multidimensional geometrically-shaped modulation formats. We will discuss formats designed using information-theoretic quantities, where the two polarizations of the light and two consecutive time-slots are used to obtain four- and eight-dimensional formats, respectively.  Recent developments in this area will be discussed, paying special attention to the increased transmission rates and increased nonlinearity tolerance offered by these multidimensional formats. 

On-Demand Intelligence at the Wireless Edge

Prof. Deniz Gündüz, Imperial College London

In the first part of this talk, Prof. Gündüz will focus on the emerging `semantic’ or goal-oriented communication paradigm, where communication networks are designed to extract and deliver the minimal amount of information required for the desired task. He will present a general framework for semantic and pragmatic communications with several novel examples. In the second part of the talk, he will introduce a new paradigm called “on-demand intelligence”, which aims at the timely delivery of machine learning models over time-varying wireless channels.

Next-Generation MIMO and the New Applications Enabled by this Technology

Prof. Erik G. Larsson, Linköping University

Prof. Larsson will give a retrospect of the development of massive MIMO for 5G, and where this is heading in 6G. He will then discuss some emerging applications enabled by this next-generation MIMO technology, particularly the service of energy-neutral (passive) devices relying on backscattering communication, and 6G access points as enablers for edge intelligence.

Lattices and Security: From Ancient Mathematics to Post-Quantum Cryptography

Dr. Cong Ling, Imperial College London

Number theory has been a subject of pure mathematics for a long period of time. A significant change in recent decades is that it has become an applied subject, driven by various applications to modern information technology. This talk will highlight some new applications of number theory, especially lattices and algebraic number theory, to the design of capacity-achieving codes for wireless communications and to the construction of cryptosystems with resilience against quantum attacks (aka post-quantum cryptography).

Access Protocols for Wireless Systems with Reconfigurable Intelligent Surfaces

Prof. Petar Popovski, Aalborg University

The widespread adoption of Reconfigurable Intelligent Surfaces (RISs) in future practical wireless systems is critically dependent on the availability of efficient access protocols. The design of access protocols is based on the mode of operation of the control channel, used to exchange information for real-time control of the RIS. This talk will introduce the two principal options for a RIS control channel: in-band and out-of-band. Out-of-band control channel exerts control over the propagation environment, but is not affected by this control. In-band control channel uses the same communication resources as the data communication, such that it is affected by the control exerted on the propagation environment. These two options lead to different types of access protocols, which will be discussed in the talk. Next, a grant-free random access (RA) protocol will be presented, intended for a massive number of accessing users. The proposed protocol relies on a channel oracle, which enables the users to infer the best RIS configurations that provide opportunistic access. This inference is based on a model created during a training phase with a greatly reduced set of RIS configurations, inspired by the Shannon-Nyquist sampling theorem.

Extremal Combinatorics and Information Theory

Prof. Igal Sason, Technion – Israel Institute of Technology, Haifa

Extremal combinatorics deals with the problem of determining or bounding the maximum or minimum possible cardinality of a finite set of objects which satisfies certain requirements. Many interesting problems in extremal combinatorics are motivated by fundamental questions in information theory such as the Shannon capacity of graphs and its connection to Ramsey numbers and to perfect graphs, the zero-error capacity of communication channels, and Witsenhausen’s rate for graphs. The Shannon entropy and other classical information measures also serve as powerful tools in proving various extremal combinatorial and graph-theoretic results, such as Shearer’s lemma and its applications in extremal combinatorics and graph theory, the submodularity properties of information measures and their utility in the derivation of information inequalities and bounds in extremal graph theory, entropy-based proofs of combinatorial results such as Bregman’s theorem in matrix theory, Spencer’s theorem in discrepancy theory, problems related to intersection families in extremal set theory, and bounds for locally decodable codes. The purpose of the talk is to survey some developments in extremal combinatorics from the perspective of information theory. 

Special Sessions

Smart Radio Environments for 6G Wireless Communication Systems

Organizers: Prof. Dr.-Ing. Robert Schober, Friedrich-Alexander-Universität Erlangen-Nürnberg | Prof. Dr.-Ing. Vahid Jamali, Technical University of Darmstadt

  • Zhiguo Ding and H. Vincent Poor
    “Beam-Based Resource Allocation in THz-NOMA Networks”
  • Shaokang Hu, Chang Liu, Derrick Wing Kwan Ng, Jinhong Yuan
    “Secure Communication in Multifunctional Active Intelligent Reflection Surface-assisted Systems”
  • Bile Peng, Finn Siegismund-Poschmann, Eduard Jorswieck
    “RISNet: A Dedicated and Scalable Neural Network Architecture for RIS Configuration”
  • Kevin Weinberger, Robert-Jeron Reifert, Aydin Sezgi, Ertugrul Basar
    “RIS-enhanced Resilience in Cell-Free MIMO”
  • Paul Zheng, Yao Zhu, Mohamed Bouchaala, Yulin Hu, Slawomir Stanczak, and Anke Schmeink
    “Federated Learning with Integrated Over-the-air Computation and Sensing in IRS-assisted Networks”
  • Juan Carlos Ruiz Sicilia, Xuewen Qian, Marco Di Renzo, Vincenzo Sciancalepore, Mérouane Debbah, Xavier Costa-Perez
    “On the Degrees of Freedom of RIS-aided Holographic MIMO Systems”

Integrated Sensing and Communication: Foundations and Perspectives

Organizers: Prof. Giuseppe Caire, TU Berlin | Prof. Dr.-Ing. Anke Schmeink, RWTH Aachen University

  • Zhongju Li, Ahmad Nimr, Philipp Schulz, Gerhard P. Fettweis
    A Comparative Study of Subspace-based Superresolution Path Delay Estimation Techniques
  • Saeid Khalili, Jan C. Hauffen, Peter Jung, Rodrigo Hernangómez, Guiseppe Caire, Slawomir Stanczak
    Multi-Scatter-Point Target Estimation for Sensing-Assisted OTFS Automotive Communication”
  • Nanchi Su, Fan Liu, Christos Masouros
    Sensing-assisted Physical Layer Security”
  • Amir Rezaei Balef, Setareh Maghsudi, Slawomir Stanczak
    Adaptive Energy-Efficient Waveform Design For Joint Communication and Sensing using Multiobjective Multiarmed Bandits”
  • Gerd vom Bögel, Aydin Sezgin, Nils Pohl, Martin Vossiek, Christian Wietfeld, Michael Weimer, Jan Wessel
    6GEM Perspective on Joint Communication and Sensing”
  • Hamdi Joudeh
    “Joint communication and target detection with multiple antennas”
  • Peter Jung, Philipp Walk, Dennis Wieruch, Kai Heuermann
    MOXZ-Radio: A New Waveform for Sensing and Communication”

Satellite Communications for 6G Networks

Organizers: Dr.-Ing. Bho Matthiesen, University of Bremen | Dr.-Ing. Dirk Wübben, University of Bremen | Prof. Dr.-Ing. Armin Dekorsy, University of Bremen | Prof. Petar Popovski, Aalborg University

  • Hung Nguyen-Kha, Vu Nguyen Ha, Eva Lagunas, Symeon Chatzinotas, Joel Grotz
    “LEO-to-User Assignment and Resource Allocation for Uplink Transmit Power Minimization”
  • Eva Lagunas, Ana Pérez-Neira, Joel Grotz, Symeon Chatzinotas, Björn Ottersten
    “Beam Splash Mitigation for NGSO Spectrum Coexistence between Feeder and User Downlink”
  • Diego Tuzi, Thomas Delamotte, Andreas Knopp
    “Beamforming performance of satellite swarm-based antenna arrays for 6G direct-to-cell connectivity”
  • Alea Schröder, Maik Röper, Dirk Wübben, Bho Matthiesen, Petar Popovski, Armin Dekorsy
    “A Comparison between RSMA, SDMA, and OMA in Multibeam LEO Satellite Systems”
  • Tomaso de Cola
    “Enabling Effective Multi-Link Data Distribution in NTN-based 6G Networks”

Explorative concepts for 6G air interface

Organizers: Prof. Dr.-Ing. Laurent Schmalen, Karlsruhe Institute of Technology | Prof. Dr.-Ing. Stephan ten Brink, University of Stuttgart

  • Steffen Gracla, Carsten Bockelmann, Armin Dekorsy
    A Multi-Task Approach to Robust Deep Reinforcement Learning for Resource Allocation
  • Charlotte Muth, Laurent Schmalen
    Autoencoder-based Joint Communication and Sensing of Multiple Targets
  • Kira Kraft, Matthias Herrmann, Oliver Griebel, Norbert Wehn
    Ensemble Belief Propagation Decoding for Short Linear Block Codes
  • Jannis A Clausius, Marvin Geiselhart, Stephan ten Brink
    Optimizing Serially Concatenated Neural Codes with Classical Decoders”

Demo Sessions

Ultra low-power DSP for coherent 100ZR

Felix Frey, Principle DSP Architect, Coherent Corp. / Finisar Germany GmbH

We demonstrate a novel class of coherent pluggable modules designed for the optical edge with application in 5G back- and fronthaul, labeled Coherent 100ZR. The QSFP28 module is the industry’s lowest-power coherent 100G pluggable which is enabled by an innovative, ultra low-power DSP—developed in Brunswick, Germany. The ASIC is manufactured in 7nm CMOS technology with less than 2 Watts per 100G, up to 300km amplified reach, and specifically designed for connecting smart antenna grids to the core network.

The demo includes an optical transmission test bed with the pluggable module, a typical fiber span, 100G live traffic, performance monitoring and telemetry.