可重构智能表面辅助多用户NOMA网络鲁棒安全资源分配  

Robust secure resource allocation for recon gurable intelligentsurface-assisted multi-user NOMA networks

作　　者：胡林 刘锡炎[1] 齐倩 雷宏江 陈前斌[1,2] Lin HU;Xiyan LIU;Qian QI;Hongjiang LEI;Qianbin CHEN(School of Communications and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Key Lab of Mobile Communications Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《中国科学:信息科学》2025年第1期187-201,共15页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:U23A20279,6190189)资助项目。

摘　　要：在不完美信道状态信息和不完美串行干扰消除的场景下,研究了可重构智能表面辅助多用户非正交多址接入网络的鲁棒安全资源分配问题.考虑能量用户作为网络中的潜在窃听节点,在两类用户(信息用户和能量用户)服务质量约束和能量用户最大窃听速率约束下,建立了基站发射功率最小化优化问题.首先,基于信息用户信道增益确定串行干扰消除解码顺序,然后使用S-程序转化含信道不确定性的非凸约束,将优化问题分解为两个子问题,最后使用基于半正定松弛的交替优化方法迭代求解两个子问题.仿真结果表明:在不完美信道状态信息下,优化串行干扰消除解码顺序可以有效地降低基站发射功率.In the scenario of imperfect channel state information(CSI)and imperfect successive interference cancellation(SIC),the problem of robust secure resource allocation in reconfigurable intelligent surface(RIS)assisted multi-user non-orthogonal multiple access(NOMA)is studied.Considering energy users as potential eavesdropping nodes in the network,Under constraints on the quality of service(QoS)and maximum eavesdropping rate,a transmit power minimization problem is formulated for the network where there are two types of users(information user and energy user).First,SIC decoding order is determined based on the channel gain of information users,then the S-procedure is used to transform the non-convex constraints with channel uncertainty,and then the optimization problem is decomposed into two sub-problems.Finally,the alternate optimization method based on semi-definite relaxation is used to iteratively solve the above sub-problems.The simulation results show that in the case of imperfect channel state information,optimizing the decoding sequence of successive interference cancellation can effectively reduce the transmit power of the base station.

关 键 词：不完美信道状态信息 不完美串行干扰消除 可重构智能表面 非正交多址接入 安全资源分配 

分 类 号：TN929.5[电子电信—通信与信息系统]