Capacity Analysis of NOMA-Enabled Underwater VLC Networks

Visible light communication (VLC) has recently emerged as an enabling technology for high capacity underwater wireless sensor networks. Non-orthogonal multiple access (NOMA) has been also proven capable of handling a massive number of sensor nodes while increasing the sum capacity. In this paper, we...

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Autores principales:	Mohammed Elamassie, Lina Bariah, Murat Uysal, Sami Muhaidat, Paschalis C. Sofotasios
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Sum capacity asymptotic sum capacity non-orthogonal multiple access orthogonal frequency division multiple access lognormal fading underwater optical turbulence Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/0b4fda54238b4394b074a83e069e166a
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id	oai:doaj.org-article:0b4fda54238b4394b074a83e069e166a
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spelling	oai:doaj.org-article:0b4fda54238b4394b074a83e069e166a2021-11-24T00:01:59ZCapacity Analysis of NOMA-Enabled Underwater VLC Networks2169-353610.1109/ACCESS.2021.3122399https://doaj.org/article/0b4fda54238b4394b074a83e069e166a2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9585115/https://doaj.org/toc/2169-3536Visible light communication (VLC) has recently emerged as an enabling technology for high capacity underwater wireless sensor networks. Non-orthogonal multiple access (NOMA) has been also proven capable of handling a massive number of sensor nodes while increasing the sum capacity. In this paper, we consider a VLC-based underwater sensor network where a clusterhead communicates with several underwater sensor nodes based on NOMA. We derive a closed-form expression for the NOMA system capacity over underwater turbulence channels modeled by lognormal distribution. NOMA sum capacity in the absence of underwater optical turbulence is also considered as a benchmark. Our results reveal that the overall capacity of NOMA-enabled Underwater VLC networks is significantly affected by the propagation distance in underwater environments. As a result, effective wireless transmission at high and moderate spectral efficiency levels can be practically achieved in underwater environments only in the context of local area networks. Moreover, we compare the achievable capacity of NOMA system with its counterpart, i.e., orthogonal frequency division multiple access (OFDMA). Our results reveal that NOMA system is not only characterized by achieving higher sum capacity than the sum capacity of its counterpart, OFDMA system. It is also shown that the distances between sensor nodes and the clusterhead for achieving the highest sum capacity in these two multiple access systems are different.Mohammed ElamassieLina BariahMurat UysalSami MuhaidatPaschalis C. SofotasiosIEEEarticleSum capacityasymptotic sum capacitynon-orthogonal multiple accessorthogonal frequency division multiple accesslognormal fadingunderwater optical turbulenceElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 153305-153315 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sum capacity asymptotic sum capacity non-orthogonal multiple access orthogonal frequency division multiple access lognormal fading underwater optical turbulence Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Sum capacity asymptotic sum capacity non-orthogonal multiple access orthogonal frequency division multiple access lognormal fading underwater optical turbulence Electrical engineering. Electronics. Nuclear engineering TK1-9971 Mohammed Elamassie Lina Bariah Murat Uysal Sami Muhaidat Paschalis C. Sofotasios Capacity Analysis of NOMA-Enabled Underwater VLC Networks
description	Visible light communication (VLC) has recently emerged as an enabling technology for high capacity underwater wireless sensor networks. Non-orthogonal multiple access (NOMA) has been also proven capable of handling a massive number of sensor nodes while increasing the sum capacity. In this paper, we consider a VLC-based underwater sensor network where a clusterhead communicates with several underwater sensor nodes based on NOMA. We derive a closed-form expression for the NOMA system capacity over underwater turbulence channels modeled by lognormal distribution. NOMA sum capacity in the absence of underwater optical turbulence is also considered as a benchmark. Our results reveal that the overall capacity of NOMA-enabled Underwater VLC networks is significantly affected by the propagation distance in underwater environments. As a result, effective wireless transmission at high and moderate spectral efficiency levels can be practically achieved in underwater environments only in the context of local area networks. Moreover, we compare the achievable capacity of NOMA system with its counterpart, i.e., orthogonal frequency division multiple access (OFDMA). Our results reveal that NOMA system is not only characterized by achieving higher sum capacity than the sum capacity of its counterpart, OFDMA system. It is also shown that the distances between sensor nodes and the clusterhead for achieving the highest sum capacity in these two multiple access systems are different.
format	article
author	Mohammed Elamassie Lina Bariah Murat Uysal Sami Muhaidat Paschalis C. Sofotasios
author_facet	Mohammed Elamassie Lina Bariah Murat Uysal Sami Muhaidat Paschalis C. Sofotasios
author_sort	Mohammed Elamassie
title	Capacity Analysis of NOMA-Enabled Underwater VLC Networks
title_short	Capacity Analysis of NOMA-Enabled Underwater VLC Networks
title_full	Capacity Analysis of NOMA-Enabled Underwater VLC Networks
title_fullStr	Capacity Analysis of NOMA-Enabled Underwater VLC Networks
title_full_unstemmed	Capacity Analysis of NOMA-Enabled Underwater VLC Networks
title_sort	capacity analysis of noma-enabled underwater vlc networks
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/0b4fda54238b4394b074a83e069e166a
work_keys_str_mv	AT mohammedelamassie capacityanalysisofnomaenabledunderwatervlcnetworks AT linabariah capacityanalysisofnomaenabledunderwatervlcnetworks AT muratuysal capacityanalysisofnomaenabledunderwatervlcnetworks AT samimuhaidat capacityanalysisofnomaenabledunderwatervlcnetworks AT paschaliscsofotasios capacityanalysisofnomaenabledunderwatervlcnetworks
_version_	1718416076210962432

Capacity Analysis of NOMA-Enabled Underwater VLC Networks

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