基于部分元的ris辅助多对传输无源波束形成

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-10-17 DOI:10.1109/LCOMM.2024.3482455

Yicheng Xu;Ruifeng Gao;Yingdong Hu;Ye Li;Jue Wang;Tony Q. S. Quek

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引用次数: 0

摘要

在当前的可重构智能表面（RIS）辅助系统中，增加一对新的收发器通常需要对所有元件完全重新计算RIS相位，这导致了巨大的开销，特别是对于大规模的RIS。在这封信中，我们建议只调整部分RIS元素来服务新增加的pair，其他元素保持不变，以提供更大的灵活性来平衡性能和开销。仿真结果表明，该方法只需要修改一小部分元件，就可以获得优化所有元件相位所能获得的大部分RIS增益。

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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Passive Beamforming for RIS-Aided Multi-Pair Transmission Using Partial Elements

In current reconfigurable intelligent surface (RIS)-aided systems, adding a new pair of transceivers often requires the RIS phases to be entirely re-calculated for all elements, inducing great overhead, especially for large-scale RISs. In this letter, we propose to only adjust part of RIS elements to serve the newly added pair, while the other elements stay unchanged, providing more flexibility to balance performance and overhead. Simulation results show that the method, with modifying only a small portion of elements, can achieve most of the RIS gain that would be achieved if optimizing phases of all the elements.

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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.