Performance Analysis of NOMA-Based Cooperative Relaying in alpha-μ Fading Channels

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Title: Performance Analysis of NOMA-Based Cooperative Relaying in alpha-μ Fading Channels
Authors: Kumar, VaibhavCardiff, BarryFlanagan, Mark F.
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Date: 24-May-2019
Online since: 2019-10-07T13:31:44Z
Abstract: Non-orthogonal multiple access (NOMA) is widely recognized as a potential multiple access technology for efficient radio spectrum utilization in the fifth-generation (5G) wireless communications standard. In this paper, we study the average achievable rate and outage probability of a cooperative relaying system (CRS) based on NOMA (CRS-NOMA) over wireless links governed by the α-μ generalized fading model; here α and μ designate the nonlinearity and clustering parameters, respectively, of each link. The average achievable rate is represented in closed-form using Meijer's G-function and the extended generalized bivariate Fox's H-function (EGBFHF), and the outage probability is represented using the lower incomplete Gamma function. Our results confirm that the CRS-NOMA outperforms the CRS with conventional orthogonal multiple access (CRS-OMA) in terms of spectral efficiency at high transmit signal-to-noise ratio (SNR). It is also evident from our results that with an increase in the value of the nonlinearity/clustering parameter, the SNR at which the CRS-NOMA outperforms its OMA based counterpart becomes higher. Furthermore, the asymptotic analysis of the outage probability reveals the dependency of the diversity order of each symbol in the CRS-NOMA system on the α and μ parameters of the fading links.
Funding Details: European Commission - European Regional Development Fund
Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2019 IEEE
Keywords: 5G mobile communicationCooperative communicationRelay networks
DOI: 10.1109/ICC.2019.8761527
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Language: en
Status of Item: Unspecified
Is part of: 2019 IEEE International Conference on Communications (ICC), Shanghai, China, 20-24 May 2019: Proceedings
Conference Details: 2019 IEEE International Conference on Communications (ICC 2019), Shanghai, China, 20-24 May 2019
ISBN: 9781538680889
Appears in Collections:Electrical and Electronic Engineering Research Collection

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