湖南大学学报（自然科学版）2026，Vol.53Issue(4)：41-51,11.DOI:10.16339/j.cnki.hdxbzkb.2026265
不完美信道下STAR-RIS联合协作干扰辅助的鲁棒安全通信
STAR-RIS and cooperative jamming assisted robust secure communication under imperfect channels
摘要
Abstract
Aiming at the issue of imperfect channel state information(CSI)caused by the passive nature of eavesdroppers,this paper introduces an external friendly jammer to degrade the quality of the eavesdropper channels and proposes a robust physical layer security optimization method for a downlink communication system with dual-sided single user and multiple eavesdroppers,assisted by a simultaneously transmitting and reflecting reconfigurable intelligent surface(STAR-RIS)and cooperative jamming.The objective is to maximize the system's sum secrecy rate(SSR)under the worst-case scenario,by jointly designing the beamforming vectors at the base station(BS)and the jammer,as well as the transmit/reflection coefficient matrix of the STAR-RIS.Since the formulated optimization problem is a non-convex problem with multiple coupled variables,an efficient iterative algorithm is developed by leveraging alternative optimization(AO),semidefinite relaxation(SDR),and the S-procedure to obtain a suboptimal solution.Simulation results demonstrate that the proposed robust scheme significantly enhances the secrecy performance of the system compared with baseline schemes.关键词
安全通信/干扰/可同时传输和反射智能超表面/交替优化/鲁棒方案/和保密速率Key words
secure communication/jamming/simultaneously transmitting and reflecting reconfigurable intelli-gent surface(STAR-RIS)/alternative optimization(AO)/robust scheme/sum secrecy rate(SSR)分类
信息技术与安全科学引用本文复制引用
李安,王智伟..不完美信道下STAR-RIS联合协作干扰辅助的鲁棒安全通信[J].湖南大学学报（自然科学版）,2026,53(4):41-51,11.基金项目
赣鄱俊才支持计划——主要学科学术和技术带头人培养计划资助项目(20232BCJ22005),Gan-Po Talent Support Program—Funding Project for the Training of Academic and Technical Leaders in Major Disciplines(20232BCJ22005) （20232BCJ22005）
国家自然科学基金资助项目(62341120),National Natural Science Foundation of China(62341120) （62341120）
江西省自然科学基金资助项目(20242BAB26016),Natural Science Foundation of Jiangxi Province(20242BAB26016) （20242BAB26016）
