Covert Communication of STAR-RIS Aided NOMA Networks

Xingwang Li, Zhifa Tian, Wenjing He, Gaojie Chen, M. Cenk Gursoy, Shahid Mumtaz, Arumugam Nallanathan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This paper investigates covert communication in simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) systems, assuming for the sake of being more practical that the successive interference cancellation (SIC) is defective. To assess the covertness performance of the considered system, we first derive closed-form expressions for the detection error probability, the optimal judgment threshold and the average minimum detection error probability of the warden, as well as the outage probability of the NOMA user pair. Then an optimization problem to maximize the effective covert rate (ECR) is proposed. Simulation results verify that the maximum ECR of the considered system could be increased by varying the different proportions of transmission and reflection components of the STAR-RIS.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalIEEE Transactions on Vehicular Technology
DOIs
StateAccepted/In press - 2024
Externally publishedYes

Keywords

  • Covert communication
  • Interference cancellation
  • Measurement
  • NOMA
  • NOMA
  • Optimization
  • Power system reliability
  • Rayleigh channels
  • STAR-RIS
  • Uncertainty
  • detection error probability
  • effective covert rate

ASJC Scopus subject areas

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

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