STAR-RIS Assisted Full-Duplex Systems: Impact of Correlation and Maximization

Anastasios Papazafeiropoulos; Pandelis Kourtessis; Ioannis Krikidis

doi:10.1109/LCOMM.2022.3204893

STAR-RIS Assisted Full-Duplex Systems: Impact of Correlation and Maximization

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29 Citations (Scopus)

Abstract

We focus on the sum-rate performance of a full-duplex (FD) communication system assisted by a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). Contrary to previous work, we account for the unavoidable spatial correlation at the STAR-RIS, and we result in closed-form expressions based on statistical channel state information (CSI), expressed by large-scale statistics. Moreover, we propose a novel maximization of the sum-rate by optimizing simultaneously both the amplitudes and the phase-shifts of the STAR-RIS. This method has a reduced overhead, which is quite important on STAR-RIS systems that are implemented with double elements compared to conventional-RIS.

Original language	English
Pages (from-to)	3004-3008
Number of pages	5
Journal	IEEE Communications Letters
Volume	26
Issue number	12
Early online date	8 Sept 2022
DOIs	https://doi.org/10.1109/LCOMM.2022.3204893
Publication status	Published - 1 Dec 2022

Keywords

Antennas
Correlation
Downlink
Protocols
Rayleigh channels
Reflection
Uplink
6G
Reconfigurable intelligent surfaces
full-duplex

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KW - Correlation

KW - Downlink

KW - Protocols

KW - Rayleigh channels

KW - Reflection

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STAR-RIS Assisted Full-Duplex Systems: Impact of Correlation and Maximization

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Keywords

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