Joint Power Transfer and Interference Suppression via Metaheuristics-Driven 1-bit Phase Control in Intelligent Reflecting Surface-Aided Wireless Systems

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Open Access

25 May 2026

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Wireless Communications Letters

Vol. 15 (21622337) , 3357-3361
DOI:10.1109/lwc.2026.3696679

Abstract

Simultaneous wireless information and power transfer (SWIPT) with intelligent reflecting surfaces (IRS) enhances wireless performance but requires solving discrete phase optimization under hardware constraints. This letter studies joint energy delivery and interference suppression in a dual-transmitter IRS-aided SWIPT system with 1-bit elements. A hybrid binary grey wolf-particle swarm optimization algorithm directly optimizes IRS phases in the discrete domain. Simulations under standardized channels demonstrate up to 15.0 bit/s/Hz spectral efficiency and 36.0 dB received power, outperforming conventional binary and continuous-relaxation methods while remaining robust to channel state information errors, scaling, interference constraints, and mobility.

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Funding Information

Trường Đại học VinUni

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