Efficient NOMA Design Without Channel Phase Information Using Amplitude-Coherent Detection

Arafat Al-Dweik, Youssef Iraqi, Ki Hong Park, Mohammad 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 languageBritish English
Pages (from-to)245-263
Number of pages19
JournalIEEE Transactions on Communications
Volume70
Issue number1
DOIs
StatePublished - 1 Jan 2022

Keywords

  • amplitude coherent
  • amplitude shift keying (ASK)
  • channel estimation
  • multiple access
  • non-coherent detection
  • Non-orthogonal multiple access (NOMA)
  • phase estimation

Fingerprint

Dive into the research topics of 'Efficient NOMA Design Without Channel Phase Information Using Amplitude-Coherent Detection'. Together they form a unique fingerprint.

Cite this