南京邮电大学学报（自然科学版）2025，Vol.45Issue(2)：39-46,8.DOI:10.14132/j.cnki.1673-5439.2025.02.005
一种ARIS辅助的无线携能通信系统安全能效优化方案
Secure energy efficiency optimization for active RIS-aided si-multaneous wireless information and power transfer systems
摘要
Abstract
To improve the security of wireless communication systems,this paper proposes an active re-configurable intelligent surface(ARIS)-assisted power splitting(PS)-simultaneous wireless information and power transfer(SWIPT)secure transmission scheme based on PS-SWIPT models,named ARIS-PS-SWIPT.First,a secure energy efficiency(SEE)maximization problem is formulated incorporating both the EE and security of the ARIS-PS-SWIPT system.The beamforming vector of the base station,the re-flection coefficient matrix of the ARIS,and the PS ratio of the legitimate user are jointly optimized to en-hance the SEE of the system.Second,since the formulated problem is non-convex,the original problem is decomposed into three sub-problems by the alternating optimization(AO)algorithm.The optimal solu-tions of the sub-problems are obtained by semi-definite relaxation(SDR)and the Dinkelbach's method.Numerical results demonstrate that the proposed ARIS-PS-SWIPT scheme outperforms the PRIS-assisted PS-SWIPT(PRIS-PS-SWIPT)scheme and the amplify and forward-assisted PS-SWIPT(AF-PS-SWIPT)scheme in terms of SEE,and the proposed algorithm has higher adaptability to solve this type of problems and obtains higher SEE compared to the genetic algorithm(GA).关键词
安全能效/有源可重构智能表面/无线携能通信/功率分割/物理层安全Key words
secure energy efficiency(SEE)/active reconfigurable intelligent surface(ARIS)/simulta-neous wireless information and power transfer(SWIPT)/power splitting(PS)/physical layer security(PLS)分类
电子信息工程引用本文复制引用
李乐,朱佳,娄钰磊..一种ARIS辅助的无线携能通信系统安全能效优化方案[J].南京邮电大学学报（自然科学版）,2025,45(2):39-46,8.基金项目
国家自然科学基金(62171237)资助项目 （62171237）
