Antenna Selection for Reconfigurable Intelligent Surfaces: A Transceiver-Agnostic Passive Beamforming Configuration

Reconfigurable intelligent surface (RIS) is capable of improving the wireless system performance by steering the reflected signal in the desired direction. One of the major challenges is that both the transceiver and RIS have to be jointly optimized, where the optimization problems have to be reform...

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 22; no. 11; p. 1
Main Authors: Xu, Chao, An, Jiancheng, Bai, Tong, Sugiura, Shinya, Maunder, Robert G., Yang, Lie-Liang, Di Renzo, Marco, Hanzo, Lajos
Format: Journal Article
Language:English
Published: New York IEEE 01.11.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Subjects:
active beamforming
Algorithms
antenna selection
Antennas
Array signal processing
Beamforming
Computer Science
Configurations
diversity
full-RF
index modulation
MIMO communication
Modulation
Multiplexing
Optimization
passive beamforming
Radio frequency
Reconfigurable intelligent surface
Reconfigurable intelligent surfaces
single-RF
space-time shift keying
spatial modulation
Steering
Symbols
Wireless communication
ISSN:1536-1276, 1558-2248
Online Access:Get full text
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Summary:Reconfigurable intelligent surface (RIS) is capable of improving the wireless system performance by steering the reflected signal in the desired direction. One of the major challenges is that both the transceiver and RIS have to be jointly optimized, where the optimization problems have to be reformulated for different system models and scenarios. To circumvent this challenge, new low-complexity antenna selection (AS) algorithms for transceiver-agnostic RIS configuration are proposed. Given a multiple-input multiple-output (MIMO) channel, the proposed RIS-AS opts for accurately aligning the RIS both with the transmit antenna (TA) and receive antenna (RA) for the sake of maximizing the MIMO channel's overall output power. The proposed RIS-AS only has to configure the RIS alone, i.e. without iterations with the transceiver optimization. As a result, the proposed RIS-AS has the compelling benefit that they are generically applicable, regardless of the specific transceiver architecture. Our simulation results confirm that the proposed RIS-AS is capable of supporting any MIMO configuration, regardless of their closed/open-loop, single-/full-RF and multiplexing-/diversity-oriented setups.
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ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2023.3255406