Multi-functional reconfigurable intelligent surface for maximizing sum rate in wireless communication systems

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-02-01 DOI:10.1016/j.aeue.2024.155648

Yinping Zhou, Yucheng Wu, Weiyang Xu

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引用次数: 0

Abstract

Current passive reflecting intelligent surfaces (RISs) face challenges, including restricted limited half-space coverage and dual fading attenuation, despite their potential to enhance wireless network performance. This paper introduces a novel multi-functional RIS (MF-RIS) that address problems, offering improved performance and full-space coverage. The working principle of the MF-RIS is first presented, followed by the introduction of an advanced beamforming strategy that leverages the MF-RIS to enhance wireless communication. To maximize the sum rate in the system, taking into account power budget and energy conservation constraints, a non-convex optimization problem is formulated, involving the optimization of MF-RIS coefficients. To address this problem, a robust iterative algorithm based on fractional programming (FP) is proposed. Experimental results validate the proposed approach, demonstrating the superior performance of the MF-RIS scheme under identical power constraints compared to dual-functional RIS (DF-RIS) and single-functional RIS (SF-RIS) schemes.

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来源期刊

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.