Covert communication for cooperative NOMA with two phases detection

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

5 Scopus Citations
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Author(s)

  • Hongxing Peng
  • Zhifa Tian
  • Xingwang Li
  • Galymzhan Nauryzbayev
  • Khaled Rabie
  • Thippa Reddy Gadekallu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)39-49
Journal / PublicationAlexandria Engineering Journal
Volume67
Online published21 Oct 2022
Publication statusPublished - 15 Mar 2023

Link(s)

Abstract

This paper investigates the covert communication of cooperative non-orthogonal multiple access (NOMA) systems, where the near user serves as a decode-and-forward (DF) relay and the far user receives the covert information from both the source and the near user. To improve the covertness performance, cooperative jamming and power randomness are adopted. Specifically, we derive detection error probability (DEP) of Willie and the minimum detection error probability (MDEP) at the optimal decision threshold for each phase. In addition, the reliability of the proposed system is investigated by deriving closed-form expressions for the outage probability (OP) of the two users. Under the covertness and reliability constraints, an optimization algorithm to maximize the effective covert rate is designed. Simulation results have confirmed the correctness of the theoretical analysis, and the proposed scheme can achieve a better covert communication.

Research Area(s)

  • Cooperative communication, Covert communication, Detection error probability, Non-orthogonal multiple access

Citation Format(s)

Covert communication for cooperative NOMA with two phases detection. / Peng, Hongxing; Tian, Zhifa; Li, Xingwang et al.
In: Alexandria Engineering Journal, Vol. 67, 15.03.2023, p. 39-49.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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