基于主被动波束成形联合优化的双RIS辅助抗干扰通信方法  

Double-RIS assisted anti-jamming communication method based on joint active and passive beamforming optimization

作　　者：郭海燕 杨震[1] 邹玉龙[1] 吕斌 冯蕴天 赵玉娟 GUO Haiyan;YANG Zhen;ZOU Yulong;LYU Bin;FENG Yuntian;ZHAO Yujuan(School of Communications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System(CEMEE),Luoyang 471003,China;School of Mathematics and Information Technology,Jiangsu Second Normal University,Nanjing 211200,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]电子信息系统复杂电磁环境效应国家重点实验室,河南洛阳471003 [3]江苏第二师范学院数学与信息技术学院,江苏南京211200

出　　处：《通信学报》2022年第7期21-30,共10页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62071242,No.62071253,No.61901229,No.62071005);电子信息系统复杂电磁环境效应国家重点实验室开放课题基金资助项目(No.CEMEE2021Z0102B);南京邮电大学国家自然科学基金孵化项目(No.NY220179)。

摘　　要：针对双可重构智能表面(RIS)辅助的无线通信系统,提出了基于主被动波束成形联合优化的抗干扰通信方法。以接收信干噪比最大化为目标,构建主被动波束成形的联合优化问题。基于交替优化算法,将联合优化问题分解为3个子问题来迭代求解。通过半定松弛算法求解各RIS的近似最优被动反射向量;基于广义瑞利商求解基站的最优主动波束成形向量。仿真结果表明,所提方法优于传统的单RIS辅助抗干扰通信方法。For double-reconfigurable intelligent surface(RIS)assisted wireless communication system,an anti-jamming communication method based on joint active and passive beamforming optimization was proposed.In order to maximize the received signal-to-interference-and-noise ratio(SINR),a joint active and passive beamforming optimization problem was formulated.By using the alternating optimization(AO)algorithm,the formulated joint optimization problem was di-vided into three subproblems,which were solved iteratively in an alternating manner.Specifically,the quasi-optimal pas-sive beamforming vector of each RIS was obtained by applying the semidefinite relaxation(SDR)algorithm,and the op-timal active beamforming vector of the BS was obtained based on the generalized Rayleigh quotient.Simulation results demonstrate that the proposed method outperforms the traditional single-RIS ant-jamming communication methods.

关 键 词：可重构智能表面 抗干扰通信 波束成形 交替优化 

分 类 号：TN92[电子电信—通信与信息系统]