Joint optimization algorithm for continuous/discrete phase beamforming in active Reconfigurable Intelligent Surfaces

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-08-16 DOI:10.1016/j.aeue.2025.155996

Qianqian Zhang, Zhengjiang Han, Folong Cao, Erfu Wang

引用次数: 0

Abstract

In this paper, a unified optimization framework for both continuous and discrete phase configurations of active Reconfigurable Intelligent Surfaces (RIS) phases method is proposed. An adaptive temperature simulated annealing algorithm optimize the phase of the active RIS reflections. Joint optimization of base station (BS) beamforming and active RIS elements is achieved through alternating iterations to maximize the quality of the signal at the user’s end, while accounting for active RIS noise. Simulations verify the proposed scheme’s applicability to both continuous and discrete phase systems. Furthermore, it is demonstrated that 4-bit discrete-phase quantization is comparable to continuous-phase signal enhancement.

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主动可重构智能曲面连续/离散相位波束形成联合优化算法

本文提出了主动可重构智能曲面（RIS）相位法连续和离散相位构型的统一优化框架。采用自适应温度模拟退火算法对RIS主动反射相位进行优化。通过交替迭代实现基站（BS）波束形成和有源RIS单元的联合优化，在考虑有源RIS噪声的同时，最大限度地提高用户端的信号质量。仿真验证了该方法对连续相和离散相系统的适用性。此外，还证明了4位离散相位量化可与连续相位信号增强相媲美。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.