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Electronics 2017, 6(3), 63;

Massive MIMO Wireless Networks: An Overview

Department of Electrical and Computer Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 31 July 2017 / Revised: 24 August 2017 / Accepted: 26 August 2017 / Published: 5 September 2017
(This article belongs to the Special Issue Smart Antennas and MIMO Communications)
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Massive multiple-input-multiple-output (MIMO) systems use few hundred antennas to simultaneously serve large number of wireless broadband terminals. It has been incorporated into standards like long term evolution (LTE) and IEEE802.11 (Wi-Fi). Basically, the more the antennas, the better shall be the performance. Massive MIMO systems envision accurate beamforming and decoding with simpler and possibly linear algorithms. However, efficient signal processing techniques have to be used at both ends to overcome the signaling overhead complexity. There are few fundamental issues about massive MIMO networks that need to be better understood before their successful deployment. In this paper, we present a detailed review of massive MIMO homogeneous, and heterogeneous systems, highlighting key system components, pros, cons, and research directions. In addition, we emphasize the advantage of employing millimeter wave (mmWave) frequency in the beamforming, and precoding operations in single, and multi-tier massive MIMO systems. View Full-Text
Keywords: 5G wireless networks; massive MIMO; linear precoding; encoding; channel estimation; pilot contamination; beamforming; HetNets 5G wireless networks; massive MIMO; linear precoding; encoding; channel estimation; pilot contamination; beamforming; HetNets

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Hassan, N.; Fernando, X. Massive MIMO Wireless Networks: An Overview. Electronics 2017, 6, 63.

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