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Parameter optimization for RIS-aided NOMA covert communication systems
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Peizhong XIE, Yang GUI, Qihui ZHU, Ting LI
Journal of Nanjing University of Posts and Telecommunications(Natural Science Edition) | 2025, 45(5) : 1 - 13
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Journal of Nanjing University of Posts and Telecommunications(Natural Science Edition) | 2025, 45(5): 1-13
• Reconfigurable Intelligent Surface Empowered 6th Generation Broadband Wireless Communication Technology •
Parameter optimization for RIS-aided NOMA covert communication systems
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Peizhong XIE, Yang GUI, Qihui ZHU, Ting LI
Affiliations
  • School of Communications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
doi: 10.14132/j.cnki.1673-5439.2025.05.001
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The covert communication system investigated in this paper employs reconfigurable intelligent surface(RIS) and non-orthogonal multiple access(NOMA) technologies. A full-duplex transceiver is used at the public user to introduce uncertainty from friendly interference, thereby enhancing covertness. A covert performance optimization scheme is proposed, where closed-form expressions for the eavesdropper's detection error probability and the effective covert transmission rate are derived. The scheme intends to maximize the system's covert performance through jointly optimizing the covert information transmission probability and the power range of the friendly interference noise. A step-by-step optimization method is employed to obtain the joint optimal design of the system parameters. Numerical simulation results demonstrate that the proposed scheme can achieve covert information transmission , and the optimal solutions for the optimization variables can serve as a guidance for parameter design in practical scenarios.

covert communication  /  reconfigurable intelligent surface(RIS)  /  non-orthogonal multiple access (NOMA)  /  covert transmission probability  /  full duplex receiver
Peizhong XIE, Yang GUI, Qihui ZHU, Ting LI. Parameter optimization for RIS-aided NOMA covert communication systems[J]. Journal of Nanjing University of Posts and Telecommunications(Natural Science Edition), 2025 , 45 (5) : 1 -13 . DOI: 10.14132/j.cnki.1673-5439.2025.05.001
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Year 2025 volume 45 Issue 5
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doi: 10.14132/j.cnki.1673-5439.2025.05.001
  • Receive Date：2025-02-12
  • Online Date：2026-04-16
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  • Received：2025-02-12
  • Revised：2025-05-04
Affiliations
    School of Communications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
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