Recent publications

November 2025

Ad-hoc hybrid-heterogeneous metropolitan-range quantum key distribution network

Jan Krause, et al., Matthias Goy

This paper presents the development and implementation of a versatile ad-hoc metropolitan-range quantum key distribution (QKD) network. The approach presented integrates various types of physical channels and QKD protocols, and a mix of trusted...


November 2025

Split-Inference Architecture for Device-Centric Radio Sensing in a Networked Robotics Scenario

Mehdi Heshmati, Slawomir Stanczak, Michael Peter, Ramez Askar, Zoran Utkovski, Sven Wittig, Yuzhen Ke, Kenan Turbic

An architecture for neuromorphic device-edge co-inference, with application to radio sensing for environment mapping in networked robotics scenarios. The developed demonstration setup integrates a radar sensor, radar preprocessing unit and...


November 2025

Robust and Efficient Kernel-Based Digital Self-Interference Cancellation Using a Priori Knowledge in Full-Duplex Transceivers

Mohammad Hossein Attar, Slawomir Stanczak, Ramez Askar, Jochen Fink

An enhanced digital self-interference cancellation technique for in-band full-duplex (FD) wireless communications, focusing on overcoming challenges from nonlinear distortions. The method uses a kernelized adaptive projected subgradient method...


November 2025

Real-Time Demonstration of Integrated Sensing and Communication in the Sub-Terahertz D-Band

Sven Wittig, Slawomir Stanczak, Michael Peter, Ramez Askar, Rodrigo Hernangómez

Real-time demonstration of an ultra-broadband (4 GHz) integrated sensing and communications (ISAC) system operating at 160 GHz in the upper D-band. The demonstration showcased quasi-monostatic sensing and a 4.9 Gbit/s communication link,...


November 2025

Intraoperative perfusion assessment by continuous, low-latency hyperspectral light-field imaging: development, methodology, and clinical application

Stefan Kray, Anna Hilsmann, Eric Wisotzky, Andreas Schmid, Moritz Gerlich, Sebastian Apweiler, Thomas Greiner, Werner Kneist

This study presents a hyperspectral light field system for intraoperative tissue oxygen saturation (????????2) analysis and visualization. We present a correlation method for determining SO2 saturation with low computational demands. We...


November 2025

Sub-THz MIMO Hybrid Beamforming: D-Band Dual-Channel Analog Beamforming Front-Ends Prototyping

Ramez Askar, Thomas Haustein, Michael Peter, Jaehoon Chung, Axel Tessmann, Laurenz John, Jongpil Lee, Mehmet Ahad Yurtoglu, Vitor Carvalho De Almeida, Arnulf Leuther, Kim Woochan, Chulkyu Mun, Yonghak Suh

Design and implementation of novel D-band (sub-THz) dual-channel (MIMO hybrid) beamforming wireless front-ends operating between 150 and 170 GHz. The system utilizes analog beamforming networks with two 16×16 microstrip Rotman lenses and dual...


November 2025

Evaluation of a WR6.5 Rotary Joint with two 3D-printed TE01 Mode Transducers

Mathis Schmieder, Wilhelm Keusgen, Michael Peter, Sven Wittig, Steffen August Sigwart

This paper explores a WR6.5 rotary joint based on two 3D-printed mode transducers. Tests from 140 to 170 GHz show about 2 dB of insertion loss across a 16 GHz usable band (145-161 GHz) and less than 15 degree of phase variation, validating 3D...


November 2025

15 GHz Independently Controllable Dual-Polarized 2-Bit Reconfigurable Intelligent Surface

Mehmet Ahad Yurtoglu, Wilhelm Keusgen, Michael Peter, Ramez Askar, Mathis Schmieder, Sven Wittig

Experience next-generation reconfigurable intelligent surfaces with a novel dual-polarized 2-bit RIS unit cell offering exceptional 55 dB cross-polarization isolation and 400 MHz bandwidth at 15 GHz. Featuring varactor-loaded bowtie elements and...


November 2025

Hardware realization of neuromorphic computing with a 4–port photonic reservoir for modulation format identification

Enes Seker, Colja Schubert, Ronald Freund, Isaac Sackey, Gregor Ronniger, Pooyan Safari, Guillermo von Hünefeld, Rijil Thomas, Stephan Suckow, Max Lemme, David Stahl, Mahdi Kaveh, Johannes Karl Fischer

We make a deep dive into the fabrication and testing of a photonic reservoir with digital readout. The developed neural network was tested for the identification of modulation formats at 32 Gbaud transmission rates, where it achieved a near-100%...


November 2025

3D-Aware Latent-Space Reenactment: Combining Expression Transfer and Semantic Editing

Paul Hinzer, Peter Eisert, Anna Hilsmann, Florian Tim Barthel

3D-LaSR introduces a new way to reenact 3D human heads by navigating the latent space of state-of-the-art Gaussian-splatting GANs, enabling smooth, realistic animations and cross-identity expression transfer from just a single monocular video. By...


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