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Performance analysis of NOMA systems over Rayleigh fading channels with successive-interference cancellation

Lookup NU author(s): Abdullah Baz, Professor Harris Tsimenidis

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Abstract

In this study, non‐orthogonal multiple access (NOMA) is considered for multiusers wireless communications over Rayleigh fading channel. The base station (BS) utilises NOMA technique to secure connectivity, users fairness and high spectral efficiency for multiusers with different channel conditions. Moreover, a power allocation mechanism is applied at the BS by giving each user its required power allocation factor (PAF) in order to share the available power. Therefore, this technique allows the users of interest to communicate with the BS over the same frequency band simultaneously in the power domain. Moreover, successive interference cancellation is applied for users with the lower PAF to remove the strong signal of the other users. Furthermore, exact expressions are derived for different performance metrics, and the probability density function of the signal‐to‐interference‐plus‐noise ratio is derived at each terminal and then exploited to obtain the outage probability and the probability of error. The performance analysis is verified via Monte–Carlo simulations demonstrating closed‐match with theoretical analysis.

Publication metadata

Author(s): Ahmed MA, Baz A, Tsimenidis CC

Publication type: Article

Publication status: Published

Journal: IET Communications

Year: 2020

Volume: 14

Issue: 6

Pages: 1065-1072

Print publication date: 01/04/2020

Online publication date: 01/04/2020

Acceptance date: 29/01/2020

ISSN (print): 1751-8628

ISSN (electronic): 1751-8636

Publisher: Institution of Engineering and Technology

URL: https://doi.org/10.1049/iet-com.2019.0504

DOI: 10.1049/iet-com.2019.0504

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