Authors
Alessio Fascista, Musa Furkan Keskin, Angelo Coluccia, Henk Wymeersch, Gonzalo Seco-Granados
Publication date
2022/5/25
Journal
IEEE Journal of Selected Topics in Signal Processing
Volume
16
Issue
5
Pages
1141-1156
Publisher
IEEE
Description
Reconfigurable intelligent surfaces (RISs) have attracted enormous interest thanks to their ability to overcome line-of-sight blockages in mmWave systems, enabling in turn accurate localization with minimal infrastructure. Less investigated are however the benefits of exploiting RIS with suitably designed beamforming strategies for optimized localization and synchronization performance. In this paper, a novel low-complexity method for joint localization and synchronization based on an optimized design of the base station (BS) active precoding and RIS passive phase profiles is proposed, for the challenging case of a single-antenna receiver. The theoretical position error bound is first derived and used as metric to jointly optimize the BS-RIS beamforming, assuming a priori knowledge of the user position. By exploiting the low-dimensional structure of the solution, a novel codebook-based robust design strategy with …
Total citations
202220232024103526
Scholar articles
A Fascista, MF Keskin, A Coluccia, H Wymeersch… - IEEE Journal of Selected Topics in Signal Processing, 2022