Recent publications

March 2025

RIS-Assisted 6G Networks: Challenges and Tradeoffs in Control Standardization

Ehsan Tohidi, Slawomir Stanczak, Stefan Schmid, Admela Jukan, Max Franke, André Drummond

Despite extensive theoretical progress in reconfigurable intelligent surfaces (RISs), practical models and network-level studies remain limited. This paper bridges the gap, exploring RIS-assisted links, proposing a control plane approach, and...


March 2025

Link Tomography: A Tool for Monitoring Optical Network and Designing Digital Twins

Matheus Ribeiro Sena, Robert Emmerich, Mohammad Behnam Shariati, Ralf-Peter Braun, Marc Geitz, Johannes K. Fischer, Ronald Freund

Researchers from Deutsche Telekom AG and Fraunhofer HHI explores the Link Tomography, a receiver-based DSP approach for monitoring optical networks and detecting anomalies. Delving into concepts and building methodologies, it addresses challenges...


March 2025

Analysis of Interaction Mechanisms and Intercomparison of Raytracing Tools for Optimizing THz Simulations

Enes Aksoy, Leszek Raschkowski, Alper Schultze, Mikel Celaya-Echarri, Leyre Azpilicueta, Abdolvakil Fazli

This paper compares different raytracing tools in the sub-THz area, to analyze the weight of several different effects, e.g. reflections, diffractions, scattering or atmospheric attenuation, during raytracing simulations for high frequencies. For...


February 2025

LiFi for Industry 4.0: Main Features, Implementation and Initial Testing of IEEE Std 802.15.13

Kai Lennert Bober, Volker Jungnickel, Ronald Freund, Falko Dressler, Anselm Ebmeyer

The recently approved IEEE standard 802.15.13 defines a deterministic medium access scheme with dynamically allocated time slices and two ways of coding and modulation for industrial light communication. We present our work on prototyping the...


February 2025

Multi-Gbit/s LiFi Experiments with a VCSEL TX and an Enhanced Pulsed Modulation PHY

Malte Hinrichs, Volker Jungnickel, Ronald Freund, Dominic Schulz, Giulio Boniello

Enhancing an OOK-based PHY for LiFi, we show that the large bandwidth, high power, and low energy consumption of low-cost VCSEL arrays combined with SFP drivers can be utilized to reach Multi-Gbit/s data rates and enable user mobility in large...


January 2025

On the Optimal Performance of Distributed Cell-Free Massive MIMO with LoS Propagation

Noor Ul Ain, Slawomir Stanczak, Lorenzo Miretti

We investigate the capability of team MMSE technique in enhancing distributed beamforming for dense user-centric cell free massive MIMO networks. Considering the anticipated ultra-dense nature of cell-free massive MIMO networks and the...


January 2025

Doppler Power Spectrum in Channels with von Mises-Fisher Distribution of Scatterers

Kenan Turbic, Slawomir Stanczak, Martin Kasparick

This paper presents a closed-form expression for Doppler spectrum in mobile wireless channels with von Mises-Fisher (vMF) angular distribution of scatters. The obtained result is employed to analyze the impact of the vMF scattering parameters...


January 2025

Semantic Security with Infinite-Dimensional Quantum Eavesdropping Channel

Matthias Frey, Slawomir Stanczak, Igor Bjelakovic, Janis Nötzel

We investigate the semantic security of classical and quantum communication channels in the presence of infinite-dimensional side channels. A new method for security proofs is developed, which allows to derive finite block-length results in the...


December 2024

Joint Waveform Design for Communication and Sensing with Adjustable PAPR

Berkan Kilic, Slawomir Stanczak, Martin Kasparick, Kenan Turbic

This paper proposes a dual-functional waveform design for integrated sensing and communication systems under adjustable peak-to-average-power-ratio constraints.


December 2024

Towards Infrastructure-assisted WiFi Rate Adaptation for Converged Networks with Morpheus

Prashiddha Dhoj Thapa, Julius Schulz-Zander, Arne Kappen

The paper discusses a novel framework to integrate heterogeneous Radio Access Technologies (RATs) with the 5G O-RAN for coordination and joint optimization. As an example, it lays out the architecture of a WiFi Radio Intelligent Controller (RIC)...


Items per page10ǀ20ǀ30
Results 31-40 of 370
<< < 1 2 3 4 5 6 7 8 > >>