On the Optimal Discrete Phase Values of Reconfigurable Intelligent Surfaces

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)2111-2114
Journal / PublicationIEEE Antennas and Wireless Propagation Letters
Volume23
Issue number7
Online published27 Mar 2024
Publication statusPublished - Jul 2024

Abstract

The design of reconfigurable intelligent surfaces (RISs) should find the optimal phase shift matrix and the optimal phase shift values. By encoding the RIS phase shifts and the phase shift values into a design matrix, a new RIS design scheme with multi-objective optimization using multiobjective evolutionary algorithm (MOEA)/D-RIS is proposed. The scheme can search for the optimal RIS phase matrix and the optimal phase shift values in the meantime. For a multiuser RIS-assisted multiple-input–single-output (MISO) system, binary phase shifts of values of 5° and 166°, other than 0° and 180°, will yield better RIS performance. © 2024 IEEE.

Research Area(s)

  • Encoding, MOEA/D, optimization, phase shift matrix, phase shift value, Quantization (signal), Reconfigurable intelligent surface, Reconfigurable intelligent surfaces, Transmission line matrix methods, Tuning, Wireless communication, Multiobjective evolutionary algorithm (MOEA)/D