Intelligent reflecting surface for sum rate enhancement in MIMO systems  

作　　者：Chan-Yeob Park Ji-Sung Jung Yeong-Rong Lee Beom-Sik Shin Hyoung-Kyu Song 

机构地区：[1]Department of Information and Communication Engineering,Sejong University,Seoul,Gwangjin-gu,Gunja-dong 98,Republic of Korea [2]Department of Convergence Engineering for Intelligent Drone Sejong University,Seoul,Gwangjin-gu,Gunja-dong 98,Republic of Korea

出　　处：《Digital Communications and Networks》2024年第1期94-100,共7页数字通信与网络（英文版）

基　　金：supported by the MSIT(Ministry of Science and ICT),Korea,under the ITRC(Information Technology Research Center)support program(IITP-2022-2018-0-01423);supervised by the ITP(Institute for Information&Communications Technology Planning&Evaluation);supported by Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(2020R1A6A1A03038540).

摘　　要：The research for the Intelligent Reflecting Surface(IRS)which has the advantages of cost and energy efficiency has been studied.Channel capacity can be effectively increased by appropriately setting the phase value of IRS elements according to the channel conditions.However,the problem of obtaining an appropriate phase value of IRs is difficult to solve due to the non-convex problem.This paper proposes an iterative algorithm for the alternating optimal solution in the Single User Multiple-Input-Multiple-Output(SU-MIMO)systems.The proposed iterative algorithm finds an alternating optimal solution that is the phase value of IRS one by one.The results show that the proposed method has better performance than that of the randomized IRS systems.The number of iterations for maximizing the performance of the proposed algorithm depends on the channel state between the IRS and the receiver.

关 键 词：Intelligent reflecting surface MIMO Sum rate 

分 类 号：TN92[电子电信—通信与信息系统]