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Cell-free massive MIMO: A new next-generation paradigm

Cell-free massive MIMO: A new next-generation paradigm
Cell-free massive MIMO: A new next-generation paradigm
Cell-free (CF) massive multiple-input multiple-output (MIMO) systems have a large number of individually controllable antennas distributed over a wide area for simultaneously serving a small number of user equipment (UE). This solution has been considered as a promising next-generation technology due to its ability to offer a similar quality of service to all UEs, despite its low-complexity signal processing. In this article, we provide a comprehensive survey of CF massive MIMO systems. To be more specific, the benefit of so-called of channel hardening and favorable propagation conditions are exploited. Furthermore we quantify the advantages of CF massive MIMO systems in terms of their energy- and cost-efficiency. Additionally, the signal processing techniques invoked for reducing the fronthaul burden for joint channel estimation and for transmit precoding are analyzed. Finally, the open research challenges in both its deployment and network management are highlighted.
2169-3536
99878-99888
Zhang, Jiayi
1b7e4254-427b-457c-b173-e9f68d6e7afd
Chen, Shuaifei
7660bc81-c6ef-4ab4-bc76-4e3aa6aa2615
Lin, Yan
882ebefb-469c-4a10-a4f3-967e730ed105
Zheng, Jiakang
7fe30193-72cf-412d-ab13-31e0e3668b8b
Ai, Bo
1223d2a6-5b0c-4065-8545-5ed608c5024c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Jiayi
1b7e4254-427b-457c-b173-e9f68d6e7afd
Chen, Shuaifei
7660bc81-c6ef-4ab4-bc76-4e3aa6aa2615
Lin, Yan
882ebefb-469c-4a10-a4f3-967e730ed105
Zheng, Jiakang
7fe30193-72cf-412d-ab13-31e0e3668b8b
Ai, Bo
1223d2a6-5b0c-4065-8545-5ed608c5024c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Jiayi, Chen, Shuaifei, Lin, Yan, Zheng, Jiakang, Ai, Bo and Hanzo, Lajos (2019) Cell-free massive MIMO: A new next-generation paradigm. IEEE Access, 7, 99878-99888. (doi:10.1109/ACCESS.2019.2930208).

Record type: Article

Abstract

Cell-free (CF) massive multiple-input multiple-output (MIMO) systems have a large number of individually controllable antennas distributed over a wide area for simultaneously serving a small number of user equipment (UE). This solution has been considered as a promising next-generation technology due to its ability to offer a similar quality of service to all UEs, despite its low-complexity signal processing. In this article, we provide a comprehensive survey of CF massive MIMO systems. To be more specific, the benefit of so-called of channel hardening and favorable propagation conditions are exploited. Furthermore we quantify the advantages of CF massive MIMO systems in terms of their energy- and cost-efficiency. Additionally, the signal processing techniques invoked for reducing the fronthaul burden for joint channel estimation and for transmit precoding are analyzed. Finally, the open research challenges in both its deployment and network management are highlighted.

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Accepted/In Press date: 14 July 2019
e-pub ahead of print date: 22 July 2019

Identifiers

Local EPrints ID: 432490
URI: https://eprints.soton.ac.uk/id/eprint/432490
ISSN: 2169-3536
PURE UUID: a7777967-2f30-40de-aa24-fcf43215f3f6
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 17 Jul 2019 16:30
Last modified: 14 Sep 2019 04:01

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Contributors

Author: Jiayi Zhang
Author: Shuaifei Chen
Author: Yan Lin
Author: Jiakang Zheng
Author: Bo Ai
Author: Lajos Hanzo ORCID iD

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