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arXiv 2403.09275cs.ITeess.SPmath.IT
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超对角可重构智能表面的静态分组策略设计

Static Grouping Strategy Design for Beyond Diagonal Reconfigurable Intelligent Surfaces

Matteo Nerini, Shanpu Shen, Bruno Clerckx

AI总结:

本文针对超对角可重构智能表面,提出基于信道统计量的静态分组策略,在单用户和多用户系统中优化分组,实现和速率最高提升60%。

摘要:

超对角可重构智能表面(BD-RIS)通过新颖的架构(如群连接RIS)扩展了传统RIS,其散射矩阵不再局限于对角形式。然而,如何在群连接RIS中优化分组元素以在保持低复杂度电路的同时最大化性能,仍未被探索。在本研究中,我们提出并建模了一种基于信道统计量优化的静态分组策略的BD-RIS。在构建相应问题后,我们设计了单用户和多用户系统中的分组方案。数值结果揭示了分组优化的优势,即和速率提升最高可达60%,尤其是在高相关信道中。

英文摘要:

Beyond diagonal reconfigurable intelligent surface (BD-RIS) extends conventional RIS through novel architectures, such as group-connected RIS, with scattering matrix not restricted to being diagonal. However, it remains unexplored how to optimally group the elements in group-connected RISs to maximize the performance while maintaining a low-complexity circuit. In this study, we propose and model BD-RIS with a static grouping strategy optimized based on the channel statistics. After formulating the corresponding problems, we design the grouping in single- and multi-user systems. Numerical results reveal the benefits of grouping optimization, i.e., up to 60% sum rate improvement, especially in highly correlated channels.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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