Joint power control and user grouping for uplink power domain non-orthogonal multiple access

Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user interference. The feature thwarts efforts to cater for pr...

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Autores principales:	Bilal Ur Rehman, Mohammad Inayatullah Babar, Arbab Waheed Ahmad, Hesham Alhumyani, Gamil Abdel Azim, Rashid A. Saeed, Sayed Abdel Khalek
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/96626d3ea88f43d9bf89d0ac72419cf7
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spelling	oai:doaj.org-article:96626d3ea88f43d9bf89d0ac72419cf72021-12-02T08:05:18ZJoint power control and user grouping for uplink power domain non-orthogonal multiple access1550-147710.1177/15501477211057443https://doaj.org/article/96626d3ea88f43d9bf89d0ac72419cf72021-12-01T00:00:00Zhttps://doi.org/10.1177/15501477211057443https://doaj.org/toc/1550-1477Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user interference. The feature thwarts efforts to cater for pressing connectivity demands posed by modern-day cellular communication networks. Non-orthogonal multiple access, regarded as a key advancement towards realization of high-speed 5G wireless communication networks, enables multiple users to access the same set of resource blocks non-orthogonally in terms of power with controllable interference, thereby allowing for overall performance enhancement. Owing to the combinatorial nature of the underlying optimization problem involving user pairing/grouping scheme, power control and decoding order, the computational complexity in determining optimal and sub-optimal solutions remains considerably high. This work proposes three novel alternative approaches (Randomly, 2-Opt and Hybrid) for arriving at a near-optimal solution for the problem of user pairing/grouping. The algorithms not only offer reduced computational complexity but also outperform orthogonal multiple access and existing schemes reported in the literature for uplink non-orthogonal multiple access systems.Bilal Ur RehmanMohammad Inayatullah BabarArbab Waheed AhmadHesham AlhumyaniGamil Abdel AzimRashid A. SaeedSayed Abdel KhalekSAGE PublishingarticleElectronic computers. Computer scienceQA75.5-76.95ENInternational Journal of Distributed Sensor Networks, Vol 17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronic computers. Computer science QA75.5-76.95
spellingShingle	Electronic computers. Computer science QA75.5-76.95 Bilal Ur Rehman Mohammad Inayatullah Babar Arbab Waheed Ahmad Hesham Alhumyani Gamil Abdel Azim Rashid A. Saeed Sayed Abdel Khalek Joint power control and user grouping for uplink power domain non-orthogonal multiple access
description	Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user interference. The feature thwarts efforts to cater for pressing connectivity demands posed by modern-day cellular communication networks. Non-orthogonal multiple access, regarded as a key advancement towards realization of high-speed 5G wireless communication networks, enables multiple users to access the same set of resource blocks non-orthogonally in terms of power with controllable interference, thereby allowing for overall performance enhancement. Owing to the combinatorial nature of the underlying optimization problem involving user pairing/grouping scheme, power control and decoding order, the computational complexity in determining optimal and sub-optimal solutions remains considerably high. This work proposes three novel alternative approaches (Randomly, 2-Opt and Hybrid) for arriving at a near-optimal solution for the problem of user pairing/grouping. The algorithms not only offer reduced computational complexity but also outperform orthogonal multiple access and existing schemes reported in the literature for uplink non-orthogonal multiple access systems.
format	article
author	Bilal Ur Rehman Mohammad Inayatullah Babar Arbab Waheed Ahmad Hesham Alhumyani Gamil Abdel Azim Rashid A. Saeed Sayed Abdel Khalek
author_facet	Bilal Ur Rehman Mohammad Inayatullah Babar Arbab Waheed Ahmad Hesham Alhumyani Gamil Abdel Azim Rashid A. Saeed Sayed Abdel Khalek
author_sort	Bilal Ur Rehman
title	Joint power control and user grouping for uplink power domain non-orthogonal multiple access
title_short	Joint power control and user grouping for uplink power domain non-orthogonal multiple access
title_full	Joint power control and user grouping for uplink power domain non-orthogonal multiple access
title_fullStr	Joint power control and user grouping for uplink power domain non-orthogonal multiple access
title_full_unstemmed	Joint power control and user grouping for uplink power domain non-orthogonal multiple access
title_sort	joint power control and user grouping for uplink power domain non-orthogonal multiple access
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/96626d3ea88f43d9bf89d0ac72419cf7
work_keys_str_mv	AT bilalurrehman jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT mohammadinayatullahbabar jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT arbabwaheedahmad jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT heshamalhumyani jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT gamilabdelazim jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT rashidasaeed jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess AT sayedabdelkhalek jointpowercontrolandusergroupingforuplinkpowerdomainnonorthogonalmultipleaccess
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Joint power control and user grouping for uplink power domain non-orthogonal multiple access

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