Analysis of Channel Estimation in Large-Scale MIMO Aided OFDM Systems with Pilot Design

被引：0
|
作者：
Ni, Shanjin [1 ]
Zhao, Junhui [1 ,2 ]
Ran, Rong [3 ]
机构：
[1] Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing 100044, Peoples R China
[2] East China Jiaotong Univ, Sch Informat Engn, Nanchang 330013, Peoples R China
[3] Ajou Univ, Dept Elect & Comp Engn, Suwon, South Korea
来源：
2016 IEEE 83RD VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING) | 2016年
关键词：
Channel estimation; MSE; Chu sequences; pilot design;
D O I：
10.1109/VTCSpring.2016.7504134
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper addresses the problem of pilot contamination in multi-cell multiuser Large-Scale Multiple-Input Multiple-Output (LS-MIMO) aided orthogonal frequency division multiplexing (OFDM) systems, and the exact closed-form expression for the mean square error (MSE) of the classical least square (LS) channel estimation algorithm is derived. Then, a pilot design criterion is proposed to design the optimal pilot sequences for mitigating the pilot contamination. Following this criterion, the improved Chu sequences with perfect auto-correction property are employed. Finally, simulation results verify the effectiveness of the pilot design scheme.
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页数：5
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