RIS-Aided Dual-Polarized MIMO: How Large a Surface Is Needed to Beat Single Polarization?

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-11-22 DOI:10.1109/LCOMM.2024.3504725

Zizhou Zheng;Huan Huang;Hongliang Zhang;A. Lee Swindlehurst

引用次数: 0

Abstract

Dual-polarized (DP) multiple-input-multiple-output (MIMO) systems have been widely adopted in commercial mobile wireless communications. Such systems achieve multiplexing and diversity gain by exploiting the polarization dimension. However, existing studies have shown that the capacity of DP MIMO may not surpass that of single-polarized (SP) MIMO systems due to the cross-polarization coupling induced by the propagation environment. In this letter, we employ reconfigurable intelligent surfaces (RISs) to address this issue and investigate how large the surface should be to ensure a better performance for DP MIMO. Specifically, we first derive the capacities of DP and SP MIMO systems with an RIS, and then study the influence of the RIS size on the system capacity. Our analyses reveal how to deploy the RIS in a DP MIMO scenario.

查看原文本刊更多论文

ris辅助双极化MIMO：需要多大的表面才能战胜单极化？

双极化（DP）多输入多输出（MIMO）系统在商用移动无线通信中得到了广泛应用。该系统利用极化维数实现多路复用和分集增益。然而，已有研究表明，由于传播环境引起的交叉极化耦合，DP MIMO的容量可能无法超过单极化MIMO系统。在这封信中，我们采用可重构智能表面（RISs）来解决这个问题，并研究表面应该有多大才能确保DP MIMO具有更好的性能。具体来说，我们首先推导了带RIS的DP和SP MIMO系统的容量，然后研究了RIS大小对系统容量的影响。我们的分析揭示了如何在DP MIMO场景中部署RIS。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.