Massive MIMO in 5G: How Beamforming, Codebooks, and Feedback Enable Larger Arrays
Ryan M. Dreifuerst, Robert W. Heath Jr
TL;DR
This paper reviews how massive MIMO in 5G leverages beamforming, codebooks, and feedback mechanisms to support larger antenna arrays, enhancing network capacity and performance.
Contribution
It provides an overview of 5G MIMO standards, details the beam-based feedback system, and discusses challenges in implementing massive MIMO.
Findings
Introduction of flexible feedback in 5G NR
Enabling larger antenna arrays through beam management
Identification of key challenges in massive MIMO deployment
Abstract
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. 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.
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Antenna Design and Analysis · Antenna Design and Optimization
MethodsBalanced Selection