Covert Communications in Intelligent Reflecting Surface-Assisted Two-Way Relaying Networks

Dan Deng, Xingwang Li, Shuping Dang, M. Cenk Gursoy, Arumugam Nallanathan

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Covert communications is critical in many application scenarios for ensuring transmission security and privacy. Two-way protocols are widely adopted in intelligent reflecting surface (IRS) assisted relaying networks to enable covert communications and prevent wireless signals from being overheard. To quantify the performance of covert communications in this special scenario, we derive the closed-form expression of outage probability and its asymptote in this paper. Considering the worst-case of covert communications, the optimal normalized power threshold of warden's detector is analyzed under a complex Gaussian distribution approximation. To meet the requirement of the detection error probability, the ratio of the transmission power between the covert nodes is investigated. Simulation results are provided to validate the theoretical expressions as well as the asymptotic analysis with a small number of reflecting elements.

Original languageEnglish (US)
Pages (from-to)12380-12385
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number11
StatePublished - Nov 1 2022
Externally publishedYes


  • Covert communications
  • detection error probability
  • intelligent reflecting surface
  • outage probability
  • two-way transmission

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Automotive Engineering


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