通信学报2025，Vol.46Issue(11)：162-172,11.DOI:10.11959/j.issn.1000-436x.2025204
IRS辅助CR-SWIPT系统中基于交替优化的安全能效最大化传输策略
Alternating optimization based secure energy efficiency maximization transmission strategy in IRS-assisted CR-SWIPT systems
摘要
Abstract
To optimize secure energy efficiency(SEE)in intelligent reflecting surface(IRS)-assisted cognitive radio si-multaneous wireless information and power transfer(CR-SWIPT)systems under multiple eavesdroppers,a joint trans-mission strategy was designed by introducing artificial noise(AN)and adopting a nonlinear energy harvesting model.An alternating optimization method was applied to jointly optimize the transmit beamforming,IRS phase shifts,and AN co-variance matrix.The non-convex optimization problem was solved using a penalty-based method combining semidefi-nite programming and second-order cone programming under energy harvesting,secrecy rate,and phase shift con-straints.Simulation results show that the proposed scheme enhances systems'energy efficiency while effectively sup-pressing eavesdropping interference.Compared with the scheme without IRS,the SEE improvement is significant.The scheme demonstrates a strong balance between communication security and energy efficiency.关键词
智能反射面/认知无线携能通信/交替优化/安全能效/人工噪声Key words
IRS/CR-SWIPT/alternating optimization/secure energy efficiency/artificial noise分类
信息技术与安全科学引用本文复制引用
许晓荣,李玉民,杨硕,刘兆霆,包建荣..IRS辅助CR-SWIPT系统中基于交替优化的安全能效最大化传输策略[J].通信学报,2025,46(11):162-172,11.基金项目
国家自然科学基金资助项目(No.62371174) （No.62371174）
浙江省自然科学基金资助项目(No.LZ24F010005)The National Natural Science Foundation of China(No.62371174),Zhejiang Provincial Natural Science Founda-tion(No.LZ24F010005) （No.LZ24F010005）
