Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods

Enhancing performance of downlink MU systems is an attractive and important research for future wireless systems. The non-orthogonal multiple access (NOMA) method was proposed to improve the performance of MU systems. In order to further improve the outage probability (OP) and ergodic capacity (EC)...

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Autores principales:	Vu Van Son, Nguyen Le Cuong, Nguyen Thu Phuong, Tran Manh Hoang, Pham Thanh Hiep
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	non orthogonal multiple access successive interference cancellation close-form expression outage probability ergodic capacity combination of precoding and NOMA Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b926213bcd0a445da4a8e7b8d69fd37f
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spelling	oai:doaj.org-article:b926213bcd0a445da4a8e7b8d69fd37f2021-11-25T16:32:00ZApproximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods10.3390/app1122105782076-3417https://doaj.org/article/b926213bcd0a445da4a8e7b8d69fd37f2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10578https://doaj.org/toc/2076-3417Enhancing performance of downlink MU systems is an attractive and important research for future wireless systems. The non-orthogonal multiple access (NOMA) method was proposed to improve the performance of MU systems. In order to further improve the outage probability (OP) and ergodic capacity (EC) of downlink NOMA MU systems, we propose the combination of precoding and NOMA methods, and then the OP and EC of MU systems with our novel method are derived in scenarios of perfect and imperfect successive interference cancellation (SIC) scheme. Moreover, the closed-form expression of OP and EC for both scenarios is theoretically derived and compared with Monte Carlo simulations. The results show that, the analysis method is accurate, and the proposed combining precoding and NOMA can further enhance the performance of MU systems in comparing with the original orthogonal multiple access method.Vu Van SonNguyen Le CuongNguyen Thu PhuongTran Manh HoangPham Thanh HiepMDPI AGarticlenon orthogonal multiple accesssuccessive interference cancellationclose-form expressionoutage probabilityergodic capacitycombination of precoding and NOMATechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10578, p 10578 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	non orthogonal multiple access successive interference cancellation close-form expression outage probability ergodic capacity combination of precoding and NOMA Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	non orthogonal multiple access successive interference cancellation close-form expression outage probability ergodic capacity combination of precoding and NOMA Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Vu Van Son Nguyen Le Cuong Nguyen Thu Phuong Tran Manh Hoang Pham Thanh Hiep Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
description	Enhancing performance of downlink MU systems is an attractive and important research for future wireless systems. The non-orthogonal multiple access (NOMA) method was proposed to improve the performance of MU systems. In order to further improve the outage probability (OP) and ergodic capacity (EC) of downlink NOMA MU systems, we propose the combination of precoding and NOMA methods, and then the OP and EC of MU systems with our novel method are derived in scenarios of perfect and imperfect successive interference cancellation (SIC) scheme. Moreover, the closed-form expression of OP and EC for both scenarios is theoretically derived and compared with Monte Carlo simulations. The results show that, the analysis method is accurate, and the proposed combining precoding and NOMA can further enhance the performance of MU systems in comparing with the original orthogonal multiple access method.
format	article
author	Vu Van Son Nguyen Le Cuong Nguyen Thu Phuong Tran Manh Hoang Pham Thanh Hiep
author_facet	Vu Van Son Nguyen Le Cuong Nguyen Thu Phuong Tran Manh Hoang Pham Thanh Hiep
author_sort	Vu Van Son
title	Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
title_short	Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
title_full	Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
title_fullStr	Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
title_full_unstemmed	Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods
title_sort	approximation of capacity for downlink multi-user system with combination of precoding and noma methods
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b926213bcd0a445da4a8e7b8d69fd37f
work_keys_str_mv	AT vuvanson approximationofcapacityfordownlinkmultiusersystemwithcombinationofprecodingandnomamethods AT nguyenlecuong approximationofcapacityfordownlinkmultiusersystemwithcombinationofprecodingandnomamethods AT nguyenthuphuong approximationofcapacityfordownlinkmultiusersystemwithcombinationofprecodingandnomamethods AT tranmanhhoang approximationofcapacityfordownlinkmultiusersystemwithcombinationofprecodingandnomamethods AT phamthanhhiep approximationofcapacityfordownlinkmultiusersystemwithcombinationofprecodingandnomamethods
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Approximation of Capacity for Downlink Multi-User System with Combination of Precoding and NOMA Methods

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