Near-field RIS-aided Localization under Channel Non-Stationarity: A Mismatched Model Approach
Paper in proceeding, 2024
With the increasing carrier frequencies and reconfigurable intelligent surface (RIS) apertures in future sixth-generation (6G) communication systems, the near-field region expands, causing more pronounced wavefront curvature and channel non-stationarity. By exploiting wavefront curvature-enabled localization with passive RIS, we propose a virtual sub-RIS-based channel model to approximate the true RIS channel. Based on this mismatched model, we propose and evaluate an iterative solution for localizing a user using narrowband pilots. Our numerical results at 28 GHz demonstrate clearly improved performance compared to the state-of-the-art reference method.
Reconfigurable Intelligent Surfaces (RISs)
Near-Field
6G
Localization
mmWave Communication
Author
Bo Sun
University of Tampere
Musa Furkan Keskin
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Moustafa Rahal
University of Surrey
Hui Chen
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Jukka Talvitie
University of Tampere
Henk Wymeersch
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
M. Valkama
University of Tampere
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
23253789 (ISSN)
271-2759798350393187 (ISBN)
25th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024
Lucca, Italy,
Lucca, Italy,
Hardware-aware Integrated Localization and Sensing for Communication Systems
Swedish Research Council (VR) (2022-03007), 2023-01-01 -- 2026-12-31.
6G DISAC
European Commission (EC) (101139130-6G-DISAC), 2024-01-01 -- 2026-12-31.
Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Telecommunications
Communication Systems
Signal Processing
DOI
10.1109/SPAWC60668.2024.10694423