Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network

Abstract The future sixth generation (6G) is going to face the significant challenges of massive connections and green communication. Recently, reconfigurable intelligent surfaces (RIS) and non-orthogonal multiple access (NOMA) have been proposed as two key technologies to solve the above problems....

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Autores principales:	Geng Li, Huiling Liu, Gaojian Huang, Xingwang Li, Bichu Raj, Ferdi Kara
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Effective capacity Non-orthogonal multiple access Reconfigurable intelligent surfaces Telecommunication TK5101-6720 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/e3ad68ec429c453bbcf1407dd9dc0155
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spelling	oai:doaj.org-article:e3ad68ec429c453bbcf1407dd9dc01552021-12-05T12:06:33ZEffective capacity analysis of reconfigurable intelligent surfaces aided NOMA network10.1186/s13638-021-02070-71687-1499https://doaj.org/article/e3ad68ec429c453bbcf1407dd9dc01552021-12-01T00:00:00Zhttps://doi.org/10.1186/s13638-021-02070-7https://doaj.org/toc/1687-1499Abstract The future sixth generation (6G) is going to face the significant challenges of massive connections and green communication. Recently, reconfigurable intelligent surfaces (RIS) and non-orthogonal multiple access (NOMA) have been proposed as two key technologies to solve the above problems. Motivated by this fact, we consider a downlink RIS-aided NOMA system, where the source aims to communicate with the two NOMA users via RIS. Considering future network supporting real-time service, we investigate the system performance with the view of effective capacity (EC), which is an important evaluation metric of delay sensitive systems. Specifically, we derive the analytical expressions of the EC of the near and far users. To obtain more useful insights, we deduce the analytical approximation expressions of the EC in the low signal-to-noise-ratio approximation by utilizing Taylor expansion. Moreover, we provide the results of orthogonal multiple access (OMA) for the purpose of comparison. It is found that (1) The number of RIS components and the transmission power of the source have important effects on the performance of the considered system; (2) Compared with OMA, NOMA system has higher EC due to the short transmission time.Geng LiHuiling LiuGaojian HuangXingwang LiBichu RajFerdi KaraSpringerOpenarticleEffective capacityNon-orthogonal multiple accessReconfigurable intelligent surfacesTelecommunicationTK5101-6720ElectronicsTK7800-8360ENEURASIP Journal on Wireless Communications and Networking, Vol 2021, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Effective capacity Non-orthogonal multiple access Reconfigurable intelligent surfaces Telecommunication TK5101-6720 Electronics TK7800-8360
spellingShingle	Effective capacity Non-orthogonal multiple access Reconfigurable intelligent surfaces Telecommunication TK5101-6720 Electronics TK7800-8360 Geng Li Huiling Liu Gaojian Huang Xingwang Li Bichu Raj Ferdi Kara Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
description	Abstract The future sixth generation (6G) is going to face the significant challenges of massive connections and green communication. Recently, reconfigurable intelligent surfaces (RIS) and non-orthogonal multiple access (NOMA) have been proposed as two key technologies to solve the above problems. Motivated by this fact, we consider a downlink RIS-aided NOMA system, where the source aims to communicate with the two NOMA users via RIS. Considering future network supporting real-time service, we investigate the system performance with the view of effective capacity (EC), which is an important evaluation metric of delay sensitive systems. Specifically, we derive the analytical expressions of the EC of the near and far users. To obtain more useful insights, we deduce the analytical approximation expressions of the EC in the low signal-to-noise-ratio approximation by utilizing Taylor expansion. Moreover, we provide the results of orthogonal multiple access (OMA) for the purpose of comparison. It is found that (1) The number of RIS components and the transmission power of the source have important effects on the performance of the considered system; (2) Compared with OMA, NOMA system has higher EC due to the short transmission time.
format	article
author	Geng Li Huiling Liu Gaojian Huang Xingwang Li Bichu Raj Ferdi Kara
author_facet	Geng Li Huiling Liu Gaojian Huang Xingwang Li Bichu Raj Ferdi Kara
author_sort	Geng Li
title	Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
title_short	Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
title_full	Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
title_fullStr	Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
title_full_unstemmed	Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network
title_sort	effective capacity analysis of reconfigurable intelligent surfaces aided noma network
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/e3ad68ec429c453bbcf1407dd9dc0155
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Effective capacity analysis of reconfigurable intelligent surfaces aided NOMA network

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