In 2000, the Signal Processing and Speech Communication Laboratory (SPSC Lab) of Graz University of Technology (TU Graz) was founded as a research and education center in nonlinear signal processing and computational intelligence, algorithm engineering, as well as circuits & systems modeling and design. It covers applications in wireless communications, speech/audio communication, and telecommunications.
If you want to learn more about Signal Processing, click: What is Signal Processing?
The Research of SPSC Lab addresses fundamental and applied research problems in five scientific areas:
Result of the Month
XL-MIMO Channel Modeling and Prediction for Wireless Power Transfer [link]
Massive antenna arrays form physically large apertures with a beam-focusing capability, leading to outstanding wireless power transfer (WPT) efficiency paired with low radiation levels outside the focusing region. However, leveraging these features requires accurate knowledge of the multipath propagation channel and overcoming the (Rayleigh) fading channel present in typical application scenarios. For that, reciprocity-based beamforming is an optimal solution that estimates the actual channel gains from pilot transmissions on the uplink. But this solution is unsuitable for passive backscatter nodes that are not capable of sending any pilots in the initial access phase. Using measured channel data from an extremely large-scale MIMO (XL-MIMO) testbed, we compare geometry-based planar wavefront and spherical wavefront beamformers with a reciprocity-based beamformer, to address this initial access problem. We also show that we can predict specular multipath components (SMCs) based only on geometric environment information. We demonstrate that a transmit power of 1W is sufficient to transfer more than 1mW of power to a device located at a distance of 12.3m when using a (40x25) array at 3.8GHz. The geometry-based beamformer exploiting predicted SMCs suffers a loss of only 2dB compared with perfect channel state information.Contact: Benjamin Deutschmann
06 Oct 2022 Student Projects Information Event: 14.10., 15:00 (BSc SP; MSc Project and Master Theses)
22 Mar 2022 Two PhD Positions in Wireless Communications and Positioning
03 Mar 2022 Press release on AI based denoising filters
03 Mar 2022 Christian Knoll received the Josef Krainer Award for his PhD Thesis
20 Apr 2021 Press release covering the H2020 project REINDEER has been published
01 Mar 2021 Course "Array Signal Processing" starting end of May 2021
01 Jan 2021 H2020 project REINDEER has been started
20 Nov 2020 Research Positions in Wireless Communications, Positioning, and Power Transfer
30 Oct 2020 Student Projects Information Event: 14.10., 16:00 (BSc SP; MSc Project and Master Theses)
27 May 2020 Call for papers in Special Issue in Speech Communication
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