Recent publications

March 2025

Automatic Drywall Analysis for Progress Tracking and Quality Control in Construction

Mariusz Trzeciakiewicz, Peter Eisert, Anna Hilsmann, Niklas Gard, Aleixo Cambeiro Barreiro

This paper presents an automated drywall analysis method for construction progress and quality assessment using on-site cameras. It integrates a deep learning-based segmentation model to detect and classify drywall elements, with a module to...


March 2025

Adaptive and Temporally Consistent Gaussian Surfels for Multi- view Dynamic Reconstruction

Decai Chen, Oliver Schreer, Peter Eisert, Ingo Feldmann, Anna Hilsmann, Brianne Arielle Oberson

We propose AT-GS, a novel method for reconstructing high-quality dynamic surfaces from multi-view videos through per-frame incremental optimization. To avoid local minima across frames, we introduce a unified and adaptive gradient-aware...


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)...


December 2024

Lossless Decoupling Networks for RF Self-Interference Cancellation in MIMO Full-Duplex Transceivers

Ramez Askar, Wilhelm Keusgen

The article presents a novel self-interference cancellation (SIC) technique using a lossless decoupling network in the RF domain for dedicated transmit-receive antennas. It includes antenna coupling analysis, SISO and 2×2 MIMO tests, and a...


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