ESPARGOS: An Ultra Low-Cost, Realtime-Capable Multi-Antenna WiFi Channel Sounder

no code implementations • 13 Feb 2025 • Florian Euchner, Tim Schneider, Marc Gauger, Stephan ten Brink

Multi-antenna channel sounding is a technique for measuring the propagation characteristics of electromagnetic waves that is commonly employed for parameterizing channel models.

Human Activity Recognition

Learning Radio Environments by Differentiable Ray Tracing

no code implementations • 30 Nov 2023 • Jakob Hoydis, Fayçal Aït Aoudia, Sebastian Cammerer, Florian Euchner, Merlin Nimier-David, Stephan ten Brink, Alexander Keller

Ray tracing (RT) is instrumental in 6G research in order to generate spatially-consistent and environment-specific channel impulse responses (CIRs).

Improving Triplet-Based Channel Charting on Distributed Massive MIMO Measurements

no code implementations • 20 Jun 2022 • Florian Euchner, Phillip Stephan, Marc Gauger, Sebastian Dörner, Stephan ten Brink

The objective of channel charting is to learn a virtual map of the radio environment from high-dimensional CSI that is acquired by a multi-antenna wireless system.

Dimensionality Reduction Triplet

Geometry-Based Phase and Time Synchronization for Multi-Antenna Channel Measurements

no code implementations • 13 Jun 2022 • Florian Euchner, Phillip Stephan, Marc Gauger, Stephan ten Brink

Synchronization of transceiver chains is a major challenge in the practical realization of massive MIMO and especially distributed massive MIMO.