210 citations · 522 across the 20 of their papers we have counts for
9 papers · 1 filter
Identification of RIS-Assisted Paths for Wireless Integrated Sensing and Communication
Zeyu Huang, Stefan Schwarz, Bashar Tahir +1
Distinguishing between reconfigurable intelligent surface (RIS) assisted paths and non-line-of-sight (NLOS) paths is a fundamental problem for RIS-assisted integrated sensing and c…
Self-Supervised and Invariant Representations for Wireless Localization
Artan Salihu, Stefan Schwarz, Markus Rupp
In this work, we present a wireless localization method that operates on self-supervised and unlabeled channel estimates. Our self-supervising method learns general-purpose channel…
Attention Aided CSI Wireless Localization
Artan Salihu, Stefan Schwarz, Markus Rupp
Deep neural networks (DNNs) have become a popular approach for wireless localization based on channel state information (CSI). A common practice is to use the raw CSI in the input…
Learning-based Remote Radio Head Selection and Localization in Distributed Antenna System
Artan Salihu, Stefan Schwarz, Markus Rupp
In this work, we consider estimating user positions in a spatially distributed antenna system (DAS) from the uplink channel state information (CSI). However, with the increased num…
Towards Scalable Uncertainty Aware DNN-based Wireless Localisation
Artan Salihu, Stefan Schwarz, Markus Rupp
Existing deep neural network (DNN) based wireless localization approaches typically do not capture uncertainty inherent in their estimates. In this work, we propose and evaluate va…
Low-Complexity Massive MIMO Tensor Precoding
Lucas N. Ribeiro, Stefan Schwarz, André L. F. de Almeida +1
We present a novel and low-complexity massive multiple-input multiple-output (MIMO) precoding strategy based on novel findings concerning the subspace separability of Rician fading…
Double-Sided Massive MIMO Transceivers for MmWave Communications
Lucas N. Ribeiro, Stefan Schwarz, André L. F. de Almeida
We propose practical transceiver structures for double-sided massive multiple-input-multiple-output (MIMO) systems. Unlike standard massive MIMO, both transmit and receive sides ar…
Versatile Mobile Communications Simulation: The Vienna 5G Link Level Simulator
Stefan Pratschner, Bashar Tahir, Ljiljana Marijanovic +5
Research and development of mobile communications systems require a detailed analysis and evaluation of novel technologies to further enhance spectral efficiency, connectivity and…
Better than Rician: Modelling millimetre wave channels as Two-Wave with Diffuse Power
Erich Zöchmann, Sebastian Caban, Christoph F. Mecklenbräuker +4
This contribution provides experimental evidence for the two-wave with diffuse power (TWDP) fading model. We have conducted two indoor millimetre wave measurement campaigns with di…