利用统计CSI的可移动天线STAR-RIS辅助通信系统

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-02-20 DOI:10.1109/LCOMM.2025.3544059

Yunan Sun;Hao Xu;Boyu Ning;Lipeng Zhu;Chongjun Ouyang;Hongwen Yang

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引用次数: 0

摘要

同时发射和反射可重构智能表面（STAR-RIS）和可移动天线（MA）是重塑无线信道和提高通信性能的两项前景广阔的技术。为了获得这两项技术的协同增益，本文研究了一种带有可移动天线的 STAR-RIS 辅助通信系统，以利用统计信道状态信息（CSI）最大化多个用户的遍历总速率。为解决这一问题，本文提出了一种基于交替优化（AO）和分数编程（FP）框架的高效算法，用于联合优化 STAR-RIS、波束成形器和基站 MA 位置的传输和反射系数（TRCs）。数值结果表明，每种单独的技术对无线信道条件的控制能力有限，但结合 STAR-RIS 和 MA 可以进一步提高全息和率。

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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STAR-RIS Aided Communication System With Movable Antennas Exploiting Statistical CSI

Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and movable antenna (MA) are two promising technologies to reshape wireless channels and improve communication performance. To reap their synergic gains, this letter investigates a STAR-RIS aided communication system with MAs to maximize the ergodic sum-rate of multiple users by exploiting statistical channel state information (CSI). To tackle this problem, an efficient algorithm based on the alternating optimization (AO) and fractional programming (FP) framework is proposed to jointly optimize the transmission and reflection coefficients (TRCs) at the STAR-RIS, the beamformer, and the positions of MAs at base station. Numerical results show that each individual technology has a limited control over the wireless channel conditions, but combining STAR-RIS and MA can further boost the ergodic sum-rate.

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.