An Efficient Method to Estimate the Embedded Element Efficiency: A Key Parameter in Large-Scale Array Communications

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-07-10 DOI:10.1109/LCOMM.2025.3588004

Yongxi Liu;Ming Zhang;Xiaoming Chen;Anxue Zhang

引用次数: 0

Abstract

The embedded element efficiency (EEE), which quantifies mutual coupling in antenna arrays, critically limits the signal-to-noise ratio in large-scale array communications. However, calculating the EEE for finite arrays remains challenging. Existing methods are either computationally expensive or fail to account for edge effects in finite arrays. In this letter, an efficient method to estimate the EEE for finite arrays is proposed. We first derive the impedance matrix of an array from the pattern overlap matrix, then compute the generalized scattering parameters for a given source network. Consequently, the EEE of each element can be determined. Compared with traditional approaches, this method captures the EEE variations across different elements while maintaining high computational efficiency, and is applicable to arrays with arbitrary geometries. Channel capacity is evaluated to illustrate the impact of EEE on multiple-input multiple-output (MIMO) systems.

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一种有效的估算嵌入元件效率的方法：大规模阵列通信中的一个关键参数

嵌入式元件效率（EEE）量化了天线阵列中的相互耦合，严重限制了大规模阵列通信中的信噪比。然而，计算有限阵列的EEE仍然具有挑战性。现有的方法要么计算成本高，要么不能考虑有限阵列中的边缘效应。在这篇文章中，提出了一种有效的估计有限阵列EEE的方法。首先由方向图重叠矩阵推导出阵列的阻抗矩阵，然后计算给定源网络的广义散射参数。因此，可以确定每个元素的EEE。与传统方法相比，该方法在保持较高的计算效率的同时捕获了不同元素之间的EEE变化，并且适用于任意几何形状的阵列。评估信道容量以说明EEE对多输入多输出（MIMO）系统的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.