基于分布式智能反射面的物理层安全通信研究冯友宏①②张彦峨*①董国青①②①(安徽师范大学物理与电子信息学院芜湖241000)②(安徽智能机器人信息融合与控制工程实验室芜湖241000)摘要：智能反射面(IRS)能够实时调整无线传输环境提高通信效率，在后5G和6G研究中得到广泛关注。该文研究分布式IRSs安全速率最大化问题：考虑功率和恒模约束以及IRS链路之间的相关性，以最大化安全传输速率为目标，构建基站波束成形和IRSs相移参数联合优化问题。采用分式规划和流形优化算法求解构建的非凸优化方程。仿真结果表明，相较于传统算法，该文算法具有较高处理效率有效提高系统安全性，也进一步表明分布式部署IRS比集中部署安全性能更优。关键词：物理层安全通信；智能反射面；分布式；相关性；非凸优化中图分类号：TN92文献标识码：A文章编号：1009-5896(2023)06-2081-08DOI:10.11999/JEIT220659ResearchonPhysicalLayerSecurityCommunicationBasedonDistributedIntelligentReflectiveSurfaceFENGYouhong①②ZHANGYan’e①DONGGuoqing①②①(SchoolofPhysicsandElectronicInformation,AnhuiNormalUniversity,Wuhu241000,China)②(AnhuiProvincialEngineeringLaboratoryonInformationFusionandControlofIntelligentRobot,Wuhu241000,China)Abstract:IntelligentReflectingSurface(IRS)hasbeenwidelyusedintheafter5Gand6Gtoincreasethecommunicationefficiencybyadjustingthewirelesstransmissionchannelsinreal-time.Inthispaper,theuseofdistributedIRSstomaximizethesecrecyrateisinvestigated.Consideringtheconstraintsforthepower,constant-modeandthecorrelationbetweentheIRSlinks,theoptimizationproblemofthesecrecyratemaximizationbasedontheactivebeamformingofthebasestationandIRSs’phaseshiftsisformulated.Anefficientalgorithmisproposedtosolvethenon-convexoptimizationproblembyusingthefractionalprogrammingandmanifoldoptimizationmethods.Finally,simulationresultsconfirm,comparedwiththeconservativemethods,theproposedalgorithmcansignificantlyimprovethesecrecycommunicationrate.Furthermore,theresultsunveilthatthedistributedIRSschemeachievesasignificantsecureperformanceimprovementoverthecentralizedIRS.Keywords:Physicallayersecuritycommunication;IntelligentReflectingSurface(IRS);Distributed;Correlation;No...
