Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes

Non-orthogonal multiple access (NOMA) aided cell-free massive multiple-input multiple-output (CF mMIMO) systems have gained great attention over the past few years to be employed in the sixth generation of the wireless network. With distributed antennas over a large area, CF mMIMO systems have much...

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Autores principales:	Reza Sayyari, Jafar Pourrostam, Mir Javad Musevi Niya
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Cell-free massive MIMO cooperative NOMA non-orthogonal multiple access (NOMA) user grouping 6G Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/0cdbf1d222604cb7b5437f73e9397eda
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spelling	oai:doaj.org-article:0cdbf1d222604cb7b5437f73e9397eda2021-11-18T00:04:40ZCell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes2169-353610.1109/ACCESS.2021.3124816https://doaj.org/article/0cdbf1d222604cb7b5437f73e9397eda2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9598897/https://doaj.org/toc/2169-3536Non-orthogonal multiple access (NOMA) aided cell-free massive multiple-input multiple-output (CF mMIMO) systems have gained great attention over the past few years to be employed in the sixth generation of the wireless network. With distributed antennas over a large area, CF mMIMO systems have much better cell coverage and higher achievable sum-rate compared to the conventional cellular and small-cell networks. This paper will propose a novel cooperative NOMA-aided CF mMIMO system. The proposed scheme will increase the achievable sum-rate and improve the system reliability by creating additional data streams between users within the same NOMA cluster. Also, we will suggest an adaptive switching algorithm between non-cooperative NOMA, cooperative NOMA, and orthogonal multiple access (OMA) modes in order to maximize the power efficiency and achievable sum-rate. We will derive closed-form expressions for the achievable downlink data rates of the mentioned modes. Lastly, we will offer a special user clustering algorithm that needs no complex optimization and ensures the existence of reliable cooperative links between the users. The simulation results will prove the superiority of the proposed scheme over the conventional NOMA-based and OMA-based CF mMIMO systems.Reza SayyariJafar PourrostamMir Javad Musevi NiyaIEEEarticleCell-free massive MIMOcooperative NOMAnon-orthogonal multiple access (NOMA)user grouping6GElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 149227-149239 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cell-free massive MIMO cooperative NOMA non-orthogonal multiple access (NOMA) user grouping 6G Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Cell-free massive MIMO cooperative NOMA non-orthogonal multiple access (NOMA) user grouping 6G Electrical engineering. Electronics. Nuclear engineering TK1-9971 Reza Sayyari Jafar Pourrostam Mir Javad Musevi Niya Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
description	Non-orthogonal multiple access (NOMA) aided cell-free massive multiple-input multiple-output (CF mMIMO) systems have gained great attention over the past few years to be employed in the sixth generation of the wireless network. With distributed antennas over a large area, CF mMIMO systems have much better cell coverage and higher achievable sum-rate compared to the conventional cellular and small-cell networks. This paper will propose a novel cooperative NOMA-aided CF mMIMO system. The proposed scheme will increase the achievable sum-rate and improve the system reliability by creating additional data streams between users within the same NOMA cluster. Also, we will suggest an adaptive switching algorithm between non-cooperative NOMA, cooperative NOMA, and orthogonal multiple access (OMA) modes in order to maximize the power efficiency and achievable sum-rate. We will derive closed-form expressions for the achievable downlink data rates of the mentioned modes. Lastly, we will offer a special user clustering algorithm that needs no complex optimization and ensures the existence of reliable cooperative links between the users. The simulation results will prove the superiority of the proposed scheme over the conventional NOMA-based and OMA-based CF mMIMO systems.
format	article
author	Reza Sayyari Jafar Pourrostam Mir Javad Musevi Niya
author_facet	Reza Sayyari Jafar Pourrostam Mir Javad Musevi Niya
author_sort	Reza Sayyari
title	Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
title_short	Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
title_full	Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
title_fullStr	Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
title_full_unstemmed	Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes
title_sort	cell-free massive mimo system with an adaptive switching algorithm between cooperative noma, non-cooperative noma, and oma modes
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/0cdbf1d222604cb7b5437f73e9397eda
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Cell-Free Massive MIMO System With an Adaptive Switching Algorithm Between Cooperative NOMA, Non-Cooperative NOMA, and OMA Modes

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