Coupled Phase-Shift STAR-RISs: A General Optimization Framework

Wang Z, Mu X, Liu Y, Schober R (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Pages Range: 1-1

DOI: 10.1109/LWC.2022.3219020

Abstract

A general optimization framework is proposed for simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) with coupled phase shifts, which converges to the Karush– Kuhn–Tucker (KKT) optimal solution under some mild conditions. More particularly, the amplitude and phase-shift coefficients of STAR-RISs are optimized alternately in closed form. To demonstrate the effectiveness of the proposed optimization framework, the throughput maximization problem is considered in a case study. It is rigorously proved that the KKT optimal solution is obtained. Numerical results confirm the effectiveness of the proposed optimization framework compared to baseline schemes.

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How to cite

APA:

Wang, Z., Mu, X., Liu, Y., & Schober, R. (2022). Coupled Phase-Shift STAR-RISs: A General Optimization Framework. IEEE Wireless Communications Letters, 1-1. https://doi.org/10.1109/LWC.2022.3219020

MLA:

Wang, Zhaolin, et al. "Coupled Phase-Shift STAR-RISs: A General Optimization Framework." IEEE Wireless Communications Letters (2022): 1-1.

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