@inproceedings{f3023e3e34f74dfba2c6e5860f25df43,
title = "Near-Field Hierarchical Beam Management for RIS-Enabled Millimeter Wave Multi-Antenna Systems",
abstract = "In this paper, we present a low overhead beam management approach for near-field millimeter-wave multi-antenna communication systems enabled by Reconfigurable Intelligent Surfaces (RISs). We devise a novel variable-width hierarchical phase-shift codebook suitable for both the near- and far-field of the RIS, and present a fast alignment algorithm for the RIS phase shifts and the transceiver beamformers. Indicative performance evaluation results are shown, verifying the effectiveness of the proposed approach in comparison with various benchmark schemes.",
keywords = "Reconfigurable intelligent surfaces, beam management, hierarchical codebook, millimeter wave, near-field regime",
author = "Alexandropoulos, {George C.} and Vahid Jamali and Robert Schober and {Vincent Poor}, H.",
note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 12th IEEE Sensor Array and Multichannel Signal Processing Workshop, SAM 2022 ; Conference date: 20-06-2022 Through 23-06-2022",
year = "2022",
doi = "10.1109/SAM53842.2022.9827873",
language = "English (US)",
series = "Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop",
publisher = "IEEE Computer Society",
pages = "460--464",
booktitle = "2022 IEEE 12th Sensor Array and Multichannel Signal Processing Workshop, SAM 2022",
address = "United States",
}