Efficient NOMA Design without Channel Phase Information using Amplitude-Coherent Detection

A. Al-Dweik, Y. Iraqi, K.-H. Park, M. Al-Jarrah, E. Alsusa, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper presents the design and bit error rate (BER) analysis of a phase-independent non-orthogonal multiple access (NOMA) system. The proposed NOMA system can utilize amplitude-coherent detection (ACD) which requires only the channel amplitude for equalization purposes. In what follows, three different designs for realizing the detection of the proposed NOMA are investigated. One is based on the maximum likelihood (ML) principle, while the other two are based on successive interference cancellation (SIC). Closed-form expressions for the BER of all detectors are derived and compared with the BER of the coherent ML detector. The obtained results, which are corroborated by simulations, demonstrate that, in most scenarios, the BER is dominated by multiuser interference rather than the absence of the channel phase information. Consequently, the BER using ML and ACD are comparable for various cases of interest. The paper also shows that the SIC detector is just an alternative approach to realize the ML detector, and hence, both detectors provide the same BER performance.
Original languageEnglish (US)
Pages (from-to)1-1
Number of pages1
JournalIEEE Transactions on Communications
DOIs
StatePublished - 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-10-15
Acknowledgements: The work of A. Al-Dweik was supported by Khalifa University Competitive Internal Research Award CIRA 2020-056.
The work of M. Al-Jarrah and E. Alsusa has received funding from the European Union’s Horizon 2020 research and innovation Programme under Grant agreement No 812991.

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