南京邮电大学学报（自然科学版）2025，Vol.45Issue(5)：1-13,13.DOI:10.14132/j.cnki.1673-5439.2025.05.001
RIS辅助NOMA隐蔽通信系统参数优化设计
Parameter optimization for RIS-aided NOMA covert communication systems
摘要
Abstract
The covert communication system investigated in this paper employs reconfigurable intelli-gent 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 covert-ness.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 infor-mation transmission probability and the power range of the friendly interference noise.A step-by-step op-timization 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.关键词
隐蔽通信/可重构智能表面/非正交多址接入/隐蔽传输概率/全双工接收机Key words
covert communication/reconfigurable intelligent surface(RIS)/non-orthogonal multiple ac-cess(NOMA)/covert transmission probability/full duplex receiver分类
信息技术与安全科学引用本文复制引用
解培中,桂洋,朱起辉,李汀..RIS辅助NOMA隐蔽通信系统参数优化设计[J].南京邮电大学学报（自然科学版）,2025,45(5):1-13,13.基金项目
国家自然科学基金(62271265)资助项目 （62271265）
