回传容量受限的Cell-free大规模MIMO传输研究综述  

Review on Cell-free Massive MIMO Transmission with Constrained Backhaul Capacity

作　　者：龚燕华 GONG Yanhua(China Telecom Dingxi Branch,Dingxi Gansu 743000,China)

机构地区：[1]中国电信股份有限公司定西分公司,甘肃定西743000

出　　处：《通信技术》2023年第9期1025-1030,共6页Communications Technology

摘　　要：去蜂窝(Cell-free)大规模多输入多输出(Multiple Input Multiple Output,MIMO)是第六代移动通信(6G)的关键技术之一。在Cell-free大规模MIMO中,接入节点(Access Point,AP)将接收到的信号通过回传链路传输至中央处理器(Central Processing Unit,CPU)完成信道估计、数据检测等操作,有效地缓解了AP计算压力。随着网络中用户数的增多,回传链路将面临极大的挑战。从回传容量受限的角度出发,分析了回传容量受限的Cell-free大规模MIMO上行传输发展现状,并对其发展趋势进行了探讨。Cell-free massive MIMO(Multiple Input Multiple Output)is one of the key technologies of the 6th generation(6G)of mobile communications.In Cell-free massive MIMO,the AP(Access Point)transmits the received signals to the CPU(Central Processing Unit)through the backhaul link to complete the operations such as channel estimation,data detection,etc.,which effectively relieves the AP computing pressure.With the increase of the number of users in the network,the backhaul link will face great challenges.In this paper,the development status of Cell-free massive MIMO uplink transmission with constrained backhaul capacity is analyzed,and its development trend is discussed.

关 键 词：去蜂窝 大规模MIMO 数据回传 容量受限 

分 类 号：TN929.53[电子电信—通信与信息系统]