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

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

引用次数: 0

Abstract

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.