Physical layer security for cooperative NOMA systems

Jianchao Chen, Liang Yang*, Mohamed Slim Alouini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

226 Scopus citations


In this correspondence, we investigate the physical layer security for cooperative nonorthogonal multiple access (NOMA) systems, where both amplify-and-forward (AF) and decode-and-forward (DF) protocols are considered. More specifically, some analytical expressions are derived for secrecy outage probability (SOP) and strictly positive secrecy capacity. Results show that AF and DF almost achieve the same secrecy performance. Moreover, asymptotic results demonstrate that the SOP tends to a constant at high signal-to-noise ratio. Finally, our results show that the secrecy performance of considered NOMA systems is independent of the channel conditions between the relay and the poor user.

Original languageEnglish (US)
Pages (from-to)4645-4649
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Issue number5
StatePublished - May 2018

Bibliographical note

Publisher Copyright:
© 1967-2012 IEEE.


  • Non-orthogonal multiple access (NOMA)
  • Relaying
  • Secrecy outage probability (SOP)
  • Strictly positive secrecy capacity (SPSC)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Physical layer security for cooperative NOMA systems'. Together they form a unique fingerprint.

Cite this