Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements

no code implementations • 24 Apr 2024 • Benjamin J. B. Deutschmann, Christian Nelson, Mikael Henriksson, Gian Marti, Alva Kosasih, Nuutti Tervo, Erik Leitinger, Fredrik Tufvesson

Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning.

Bayesian Inference

Optimal Training Design for Over-the-Air Polynomial Power Amplifier Model Estimation

no code implementations • 19 Apr 2024 • François Rottenberg, Thomas Feys, Nuutti Tervo

The current evolution towards a massive number of antennas and a large variety of transceiver architectures forces to revisit the conventional techniques used to improve the fundamental power amplifier (PA) linearity-efficiency trade-off.

Waveforms for sub-THz 6G: Design Guidelines

no code implementations • 15 Jun 2023 • Muris Sarajlić, Nuutti Tervo, Aarno Pärssinen, Le Hang Nguyen, Hardy Halbauer, Kilian Roth, Vaidyanathan Kumar, Tommy Svensson, Ahmad Nimr, Stephan Zeitz, Meik Dörpinghaus, Gerhard Fettweis

The projected sub-THz (100 - 300 GHz) part of the upcoming 6G standard will require a careful design of the waveform and choice of slot structure.

Hybrid Beamforming for mm-Wave Massive MIMO Systems with Partially Connected RF Architecture

no code implementations • 4 Dec 2020 • Mohammad Majidzadeh, Jarkko Kaleva, Nuutti Tervo, Harri Pennanen, Antti Tolli, Matti Latva-aho

Hybrid analog-digital beamforming has been recognised as a promising approach for large-scale MIMO implementations with a reduced number of costly and power-hungry RF chains.