Minimally Equicorrelated MIMO Modelling for NLOS MM Wave Performance Improvement

IF 0.4 Q4 TELECOMMUNICATIONS

International Journal of Interdisciplinary Telecommunications and Networking Pub Date : 2022-01-01 DOI:10.4018/ijitn.309695

Sabyasachi Bhattacharyya, G. Aruna

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Abstract

The 5G physical layer has evolved rapidly. With transmissions at 28, 38, and 72 GHz, millimeter (MM) wave communications are at the core of it. Such links provide improved data rates to an increased number of users availing around 20 GHz of free spectrum. Directional arrays in multiple-input multiple-output (MIMO) setups facilitate beamsteered transmissions. Maximal ratio combining (MRC) receivers aid MM wave signaling and link metrics are analyzed in terms of antenna correlations. The system model is evaluated assuming a short range, non-line-of-sight (NLOS) MM wave user under independently correlated, Rayleigh conditions. This paper showcases analytical closed form expressions for received signal, output signal- to-noise ratio (SNR), line-of-sight (LOS), probability density function (PDF), and NLOS average capacity of the proposed MM wave link. The derivations exhibit capacity alterations with transceiver correlations. MM wave correlation matrices have unique dependency on steering vectors or corresponding transmission angles. This does not apply to millimeter wave.

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NLOS毫米波性能改进的最小等相关MIMO建模

5G物理层发展迅速。在28、38和72千兆赫的传输中，毫米波通信是其核心。这种链路为越来越多的用户提供了更好的数据速率，这些用户可以使用大约20千兆赫的免费频谱。多输入多输出（MIMO）设置中的定向阵列有助于波束导向传输。最大比值组合（MRC）接收机有助于MM波信令，并根据天线相关性分析链路度量。系统模型是在独立相关的瑞利条件下，假设短距离、非视距（NLOS）MM波用户进行评估的。本文展示了所提出的毫米波链路的接收信号、输出信噪比、视线、概率密度函数和非直瞄平均容量的解析闭合表达式。导数表现出随收发器相关性的容量变化。MM波相关矩阵对转向矢量或相应的透射角具有独特的依赖性。这不适用于毫米波。

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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International Journal of Interdisciplinary Telecommunications and Networking TELECOMMUNICATIONS-

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期刊介绍： The International Journal of Interdisciplinary Telecommunications and Networking (IJITN) examines timely and important telecommunications and networking issues, problems, and solutions from a multidimensional, interdisciplinary perspective for researchers and practitioners. IJITN emphasizes the cross-disciplinary viewpoints of electrical engineering, computer science, information technology, operations research, business administration, economics, sociology, and law. The journal publishes theoretical and empirical research findings, case studies, and surveys, as well as the opinions of leaders and experts in the field. The journal''s coverage of telecommunications and networking is broad, ranging from cutting edge research to practical implementations. Published articles must be from an interdisciplinary, rather than a narrow, discipline-specific viewpoint. The context may be industry-wide, organizational, individual user, or societal. Topics Covered: -Emerging telecommunications and networking technologies -Global telecommunications industry business modeling and analysis -Network management and security -New telecommunications applications, products, and services -Social and societal aspects of telecommunications and networking -Standards and standardization issues for telecommunications and networking -Strategic telecommunications management -Telecommunications and networking cultural issues and education -Telecommunications and networking hardware and software design -Telecommunications investments and new ventures -Telecommunications network modeling and design -Telecommunications regulation and policy issues -Telecommunications systems economics