A pilot allocation method for multi-cell multi-user massive MIMO system

作     者：LI Yiming DU Liping CHEN Yueyun LI Yiming;DU Liping;CHEN Yueyun

作者机构：School of Computer and Communication EngineeringUniversity of Science and Technology BeijingBeijing 100083China Wireless and Space Communication LaboratoryShunde Graduate School of University of Science and Technology BeijingFoshan 528000China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2021年第32卷第2期

页      面：399-407页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：supported by the Scientific and Technological Innovation Foundation of Shunde Graduate School USTB(BK19CF002) 

主　　题：massive multiple input multiple output(MIMO) pilot allocation cell classification users grouping(UG) spectral efficiency 

摘      要：Pilot contamination can spoil the accuracy of channel estimation and then has become one of the key problems influencing the performance of massive multiple input multiple output(MIMO)*** paper proposes a method based on cell classification and users grouping to mitigate the pilot contamination in multi-cell massive MIMO systems and improve the spectral *** pilots of the terminals are allocated onebit orthogonal identifier to diminish the cell categories by the operation of exclusive OR(XOR).At the same time,the users are divided into edge user groups and central user groups according to the large-scale fading coefficients by the clustering algorithm,and different pilot sequences are assigned to different *** simulation results show that the proposed method can effectively improve the spectral efficiency of multi-cell massive MIMO systems.