用于近场xml - mimo通信的非均匀三维阵列设计

IF 5.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2025-06-10 DOI:10.1109/LWC.2025.3578373

Yunhui Guo;Yang Zhang;Lihua Pang;Yaxin Ren;Yijian Chen;Yuanwei Liu

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引用次数: 0

摘要

在这封信中，提出了优化非均匀三维（3D）阵列的通用设计准则，以增强超大规模MIMO （xml -MIMO）通信中的近场容量。具体地说，首先给出了部署非均匀三维阵列时渐近信道特征值的解析表征。在此基础上，以系统容量最大化为目标，对阵列优化问题进行了数学表述。结果表明，最优非均匀三维天线阵列呈离心排列，单元在中心稀疏排列，周围密集排列。数值结果表明，优化后的非均匀三维阵列比常规阵列有显著的容量增益。

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Design of Non-Uniform 3-D Arrays for Near-Field XL-MIMO Communications

In this letter, a general design criterion is proposed for optimizing non-uniform three-dimensional (3D) arrays to enhance near-field capacity in extremely large-scale MIMO (XL-MIMO) communications. Specifically, an analytical characterization for the asymptotic channel eigenvalues with deployed non-uniform 3D arrays is first presented. Subsequently, with the objective of maximizing system capacity, the array optimization problem is mathematically formulated based on the derived expressions. It is shown that the optimal non-uniform 3D antenna array exhibits a centrifugal arrangement, with elements sparsely arranged at the center and densely packed in the surrounding areas. Numerical results demonstrate a significant capacity gain of the optimized non-uniform 3D arrays over regular arrays.

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来源期刊

IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.