Joint Frequency Offset and Channel Estimation for Distributed MIMO in Time-Varying Channels

被引：1

作者：

Song, Lijun ^{[1
]}

Kong, Zhaofu ^{[2
]}

Luo, Yang ^{[2
]}

Li, Yinze ^{[2
]}

Chen, Xiao ^{[2
]}

Lei, Xia ^{[2
]}

Jin, Maozhu ^{[3
]}

机构：

[1] Chengdu Univ Informat Technol, Chengdu 610225, Peoples R China

[2] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 610054, Peoples R China

[3] Sichuan Univ, Sch Business, Chengdu 610065, Peoples R China

来源：

APPLIED MATHEMATICS & INFORMATION SCIENCES | 2014年 / 8卷 / 06期

基金：

美国国家科学基金会;

关键词：

Joint frequency offset and channel estimation; EM; distributed MIMO; time-varying; SYNCHRONIZATION;

D O I：

10.12785/amis/080659

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In this paper, the joint estimation of frequency offsets and channel for distributed MIMO system in time-varying channel is discussed. We assume that each pair of transmit and receive antennas has a different frequency offset. We promote the multi-parameter estimation based on expectation conditional maximization (ECM) and space-alternating generalized expectation-maximization (SAGE) for a MIMO system operating under a flat-fading environment to the multi-parameter estimation using EM algorithm for distributed MIMO systems in time-varying channel. Theoretical analysis and simulation results indicate that the improvement can well compensate for the performance loss caused by time-variability and achieve good performance for time-varying distributed MIMO systems

引用

页码：3175 / 3182

页数：8

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