Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey

Abstract In recent times, the rapid growth in mobile subscriptions and the associated demand for high data rates fuels the need for a robust wireless network design to meet the required capacity and coverage. Deploying massive numbers of cellular base stations (BSs) over a geographic area to fulfill...

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Autores principales:	Hope Ikoghene Obakhena, Agbotiname Lucky Imoize, Francis Ifeanyi Anyasi, K. V. N. Kavitha
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Cell-free massive MIMO 5G and B5G wireless networks Channel estimation Hardware impairments NOMA SWIPT Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/eabe6855deac4b97960ef8a259ceeb2e
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spelling	oai:doaj.org-article:eabe6855deac4b97960ef8a259ceeb2e2021-11-14T12:16:18ZApplication of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey10.1186/s44147-021-00014-y1110-19032536-9512https://doaj.org/article/eabe6855deac4b97960ef8a259ceeb2e2021-10-01T00:00:00Zhttps://doi.org/10.1186/s44147-021-00014-yhttps://doaj.org/toc/1110-1903https://doaj.org/toc/2536-9512Abstract In recent times, the rapid growth in mobile subscriptions and the associated demand for high data rates fuels the need for a robust wireless network design to meet the required capacity and coverage. Deploying massive numbers of cellular base stations (BSs) over a geographic area to fulfill high-capacity demands and broad network coverage is quite challenging due to inter-cell interference and significant rate variations. Cell-free massive MIMO (CF-mMIMO), a key enabler for 5G and 6G wireless networks, has been identified as an innovative technology to address this problem. In CF-mMIMO, many irregularly scattered single access points (APs) are linked to a central processing unit (CPU) via a backhaul network that coherently serves a limited number of mobile stations (MSs) to achieve high energy efficiency (EE) and spectral gains. This paper presents key areas of applications of CF-mMIMO in the ubiquitous 5G, and the envisioned 6G wireless networks. First, a foundational background on massive MIMO solutions-cellular massive MIMO, network MIMO, and CF-mMIMO is presented, focusing on the application areas and associated challenges. Additionally, CF-mMIMO architectures, design considerations, and system modeling are discussed extensively. Furthermore, the key areas of application of CF-mMIMO such as simultaneous wireless information and power transfer (SWIPT), channel hardening, hardware efficiency, power control, non-orthogonal multiple access (NOMA), spectral efficiency (SE), and EE are discussed exhaustively. Finally, the research directions, open issues, and lessons learned to stimulate cutting-edge research in this emerging domain of wireless communications are highlighted.Hope Ikoghene ObakhenaAgbotiname Lucky ImoizeFrancis Ifeanyi AnyasiK. V. N. KavithaSpringerOpenarticleCell-free massive MIMO5G and B5G wireless networksChannel estimationHardware impairmentsNOMASWIPTEngineering (General). Civil engineering (General)TA1-2040ENJournal of Engineering and Applied Science, Vol 68, Iss 1, Pp 1-41 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cell-free massive MIMO 5G and B5G wireless networks Channel estimation Hardware impairments NOMA SWIPT Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Cell-free massive MIMO 5G and B5G wireless networks Channel estimation Hardware impairments NOMA SWIPT Engineering (General). Civil engineering (General) TA1-2040 Hope Ikoghene Obakhena Agbotiname Lucky Imoize Francis Ifeanyi Anyasi K. V. N. Kavitha Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
description	Abstract In recent times, the rapid growth in mobile subscriptions and the associated demand for high data rates fuels the need for a robust wireless network design to meet the required capacity and coverage. Deploying massive numbers of cellular base stations (BSs) over a geographic area to fulfill high-capacity demands and broad network coverage is quite challenging due to inter-cell interference and significant rate variations. Cell-free massive MIMO (CF-mMIMO), a key enabler for 5G and 6G wireless networks, has been identified as an innovative technology to address this problem. In CF-mMIMO, many irregularly scattered single access points (APs) are linked to a central processing unit (CPU) via a backhaul network that coherently serves a limited number of mobile stations (MSs) to achieve high energy efficiency (EE) and spectral gains. This paper presents key areas of applications of CF-mMIMO in the ubiquitous 5G, and the envisioned 6G wireless networks. First, a foundational background on massive MIMO solutions-cellular massive MIMO, network MIMO, and CF-mMIMO is presented, focusing on the application areas and associated challenges. Additionally, CF-mMIMO architectures, design considerations, and system modeling are discussed extensively. Furthermore, the key areas of application of CF-mMIMO such as simultaneous wireless information and power transfer (SWIPT), channel hardening, hardware efficiency, power control, non-orthogonal multiple access (NOMA), spectral efficiency (SE), and EE are discussed exhaustively. Finally, the research directions, open issues, and lessons learned to stimulate cutting-edge research in this emerging domain of wireless communications are highlighted.
format	article
author	Hope Ikoghene Obakhena Agbotiname Lucky Imoize Francis Ifeanyi Anyasi K. V. N. Kavitha
author_facet	Hope Ikoghene Obakhena Agbotiname Lucky Imoize Francis Ifeanyi Anyasi K. V. N. Kavitha
author_sort	Hope Ikoghene Obakhena
title	Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
title_short	Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
title_full	Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
title_fullStr	Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
title_full_unstemmed	Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey
title_sort	application of cell-free massive mimo in 5g and beyond 5g wireless networks: a survey
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/eabe6855deac4b97960ef8a259ceeb2e
work_keys_str_mv	AT hopeikogheneobakhena applicationofcellfreemassivemimoin5gandbeyond5gwirelessnetworksasurvey AT agbotinameluckyimoize applicationofcellfreemassivemimoin5gandbeyond5gwirelessnetworksasurvey AT francisifeanyianyasi applicationofcellfreemassivemimoin5gandbeyond5gwirelessnetworksasurvey AT kvnkavitha applicationofcellfreemassivemimoin5gandbeyond5gwirelessnetworksasurvey
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Application of cell-free massive MIMO in 5G and beyond 5G wireless networks: a survey

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