Pilot contamination suppression method for massive MIMO system based on divided pilot reuse

被引：0
|
作者：
Li J.-P. [1 ]
Xue P. [1 ,2 ]
Yang T. [3 ]
Li M.-L. [1 ]
机构：
[1] School of Computer Science, Northeast Electric Power University, Jilin
[2] Liaoyuan Power Supply Company, State Grid Jilin Electric Power Co., Ltd., Liaoyuan
[3] State Grid Jiangxi Information & Telecommunication Company, Nanchang
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2021年 / 51卷 / 06期
关键词：
Communication technology; Divided pilot reuse; Interference of users; Massive multiple-input multiple-output systems; Pilot contamination; Pilot overhead;
D O I：
10.13229/j.cnki.jdxbgxb20200666
中图分类号：
学科分类号：
摘要：
Massive Multiple-input Multiple-output (MIMO) systems may cause serious problems named pilot contamination due to the limitation of the number of pilot sequences and interference of users. which will result in the reduction of the system performance. In order to suppress pilot contamination, a Divided Pilot Reuse Strategy (DPRS) is proposed to redistribute the pilot sequences. The pilot sequences are divided into central user groups and edge user groups according to the degree of user interference in the cell, and the fully orthogonal pilot sequences are allocated for edge users. In addition, a pilot overhead optimization strategy is proposed for edge users, analyzing the pilot overhead of the system, and seeking the optimal solution of both pilot contamination suppression and pilot overhead. Theoretical analysis and simulation results show that the proposed method can suppress pilot contamination and improve system performance. © 2021, Jilin University Press. All right reserved.
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页码：2225 / 2236
页数：11
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