双偏振超越对角RIS

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-03-03 DOI:10.1109/LCOMM.2025.3547175

Matteo Nerini;Bruno Clerckx

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引用次数: 0

摘要

超越对角线可重构智能曲面（BD-RIS）是一种比传统RIS更灵活的RIS体系结构。虽然BD-RIS主要是在单极化系统的情况下进行分析，但现代无线部署是双极化的。为了解决这一差距，本文研究了双极化bd - ris辅助系统的基本限制。我们推导了控制BD-RIS性能的标度律，以及BD-RIS在性能和电路复杂度之间权衡的Pareto边界。理论结果表明，群大小为2的群连接RIS在瑞利和视距（LoS）通道中都比传统RIS提供了显著的增益，同时保持了较低的电路复杂性。

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Dual-Polarized Beyond Diagonal RIS

Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a family of RIS architectures more flexible than conventional RIS. While BD-RIS has been primarily analyzed assuming uni-polarized systems, modern wireless deployments are dual-polarized. To address this gap, this letter investigates the fundamental limits of dual-polarized BD-RIS-aided systems. We derive the scaling laws governing the performance of BD-RIS and the Pareto frontier of the trade-off between performance and circuit complexity enabled by BD-RIS. Theoretical results show that the group-connected RIS with group size 2 provides remarkable gains over conventional RIS in both Rayleigh and line-of-sight (LoS) channels, while maintaining a reduced circuit complexity.

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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.