有源智能反射面辅助大规模MIMO波束成形方案  

Beamforming Scheme for Active Intelligent Reflective Surfaces Aided Massive MIMO

作　　者：刘依依 鲍慧[1] LIU Yiyi;BAO Hui(North China Electric Power University,Baoding Hebei 071003,China)

机构地区：[1]华北电力大学,河北保定071003

出　　处：《通信技术》2022年第11期1403-1407,共5页Communications Technology

基　　金：国网北京市电力公司科技项目(SGBJDK00JLJS2100428)。

摘　　要：针对智能反射表面(Intelligent Reflective Surfaces,IRS)引入的“双重衰落”问题,提出了利用有源IRS辅助大规模多输入多输出(Multiple-Input Multiple-Output,MIMO)进行通信传输的方法。在功率和IRS相位的约束下,通过调整基站和IRS处的波束成形,利用连续凸逼近算法和交替迭代算法,得到了最大化用户和速率的最优解。结果表明,用户可在有源IRS的帮助下实现比传统IRS更高的增益。Aiming at the problem of dual fading introduced by IRS(Intelligent Reflective Surfaces), this paper proposes a method for communication transmission using active IRS assisted by massive MIMO(Multiple-Input Multiple-Output). Under the constraints of power and IRS phase, by adjusting the beamforming at the base station and the IRS, using the successive convex approximation algorithm and the alternate iteration algorithm, the optimal solution to maximize the users’ sum rate is obtained. The results indicate that users can achieve higher gain than traditional IRS with the help of active IRS.

关 键 词：双重衰落 大规模多输入多输出 智能反射面 连续凸逼近 

分 类 号：TN929.5[电子电信—通信与信息系统]