Massive MIMO in 5G: How Beamforming, Codebooks, and Feedback Enable Larger Arrays
Massive MIMO in 5G: How Beamforming, Codebooks, and Feedback Enable Larger Arrays
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DOI：
10.1109/mcom.001.2300064
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发表时间：
2023-01
影响因子：
11.2
通讯作者：
Ryan M. Dreifuerst;R. Heath
中科院分区：
文献类型：
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作者：
Ryan M. Dreifuerst;R. Heath
大规模多输入多输出（MIMO）是第五代（5G）蜂窝网络及以后的重要技术。为了帮助设计基站的波束成形，5G以灵活反馈和可配置天线阵列几何形状的形式引入了新的支持，允许任意大规模的物理阵列。在本文中，我们将概述整个移动的标准中的MIMO，重点介绍5G NR中新的基于波束的反馈系统，并描述该反馈系统如何通过波束管理实现大规模MIMO。最后，我们总结了与5G中大规模MIMO相关的挑战。
Massive multiple-input multiple-output (MIMO) is an important technology in fifth generation (5G) cellular networks and beyond. To help design the beamforming at the base station, 5G has introduced new support in the form of flexible feedback and configurable antenna array geometries that allow for arbitrarily massive physical arrays. In this article, we present an overview of MIMO throughout the mobile standards, highlight the new beam-based feedback system in 5G NR, and describe how this feedback system enables massive MIMO through beam management. Finally, we conclude with challenges related to massive MIMO in 5G.