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Backscatter Assisted NOMA-PLNC Based Wireless Networks

In this paper, sum capacity maximization of the non-orthogonal multiple access (NOMA)-based wireless network is studied in the presence of ambient backscattering (ABS). Assuming that ABS is located next to far nodes, it improves the signal strength of far node cluster. By applying suitable successiv...

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Detalles Bibliográficos
Autores principales: Rajkumar, Samikkannu, Jayakody, Dushantha Nalin K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620736/
https://www.ncbi.nlm.nih.gov/pubmed/34833665
http://dx.doi.org/10.3390/s21227589
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author Rajkumar, Samikkannu
Jayakody, Dushantha Nalin K.
author_facet Rajkumar, Samikkannu
Jayakody, Dushantha Nalin K.
author_sort Rajkumar, Samikkannu
collection PubMed
description In this paper, sum capacity maximization of the non-orthogonal multiple access (NOMA)-based wireless network is studied in the presence of ambient backscattering (ABS). Assuming that ABS is located next to far nodes, it improves the signal strength of far node cluster. By applying suitable successive interference cancellation (SIC) operation, far node cluster act as an internet of things (IoT) reader. Moreover, to improve the uplink performance of the nodes, a physical layer network coding (PLNC) scheme is applied in the proposed network. Power optimization is employed at the access point (AP) to enhance the downlink performance with total transmit power constraint and minimum data rate requirement per user constraint using Lagrangian’s function. In addition, end-to-end outage performance of the proposed wireless network is analyzed to enhance each wireless link capacity. Numerical results evident that the outage performance of the proposed network is significantly improved while using the ABS. Furthermore, the average bit error rate (BER) performance of the proposed wireless network is studied to improve the reliability. Simulation results are presented to validate the analytical expressions.
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spelling pubmed-86207362021-11-27 Backscatter Assisted NOMA-PLNC Based Wireless Networks Rajkumar, Samikkannu Jayakody, Dushantha Nalin K. Sensors (Basel) Article In this paper, sum capacity maximization of the non-orthogonal multiple access (NOMA)-based wireless network is studied in the presence of ambient backscattering (ABS). Assuming that ABS is located next to far nodes, it improves the signal strength of far node cluster. By applying suitable successive interference cancellation (SIC) operation, far node cluster act as an internet of things (IoT) reader. Moreover, to improve the uplink performance of the nodes, a physical layer network coding (PLNC) scheme is applied in the proposed network. Power optimization is employed at the access point (AP) to enhance the downlink performance with total transmit power constraint and minimum data rate requirement per user constraint using Lagrangian’s function. In addition, end-to-end outage performance of the proposed wireless network is analyzed to enhance each wireless link capacity. Numerical results evident that the outage performance of the proposed network is significantly improved while using the ABS. Furthermore, the average bit error rate (BER) performance of the proposed wireless network is studied to improve the reliability. Simulation results are presented to validate the analytical expressions. MDPI 2021-11-15 /pmc/articles/PMC8620736/ /pubmed/34833665 http://dx.doi.org/10.3390/s21227589 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rajkumar, Samikkannu
Jayakody, Dushantha Nalin K.
Backscatter Assisted NOMA-PLNC Based Wireless Networks
title Backscatter Assisted NOMA-PLNC Based Wireless Networks
title_full Backscatter Assisted NOMA-PLNC Based Wireless Networks
title_fullStr Backscatter Assisted NOMA-PLNC Based Wireless Networks
title_full_unstemmed Backscatter Assisted NOMA-PLNC Based Wireless Networks
title_short Backscatter Assisted NOMA-PLNC Based Wireless Networks
title_sort backscatter assisted noma-plnc based wireless networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620736/
https://www.ncbi.nlm.nih.gov/pubmed/34833665
http://dx.doi.org/10.3390/s21227589
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