[1]肖素珍,陈恩庆.基于因子图的MIMO-OFDM时变信道估计[J].郑州大学学报(工学版),2016,37(01):87-91.[doi:10.3969/j.issn.1671-6833.201503064]
　Chen Enqing,Xiao Suzhen.Based on the Factor Graph of MIMO-OFDM Time-varying Channel Estimation[J].Journal of Zhengzhou University (Engineering Science),2016,37(01):87-91.[doi:10.3969/j.issn.1671-6833.201503064]
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基于因子图的MIMO-OFDM时变信道估计()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
37卷
期数:
2016年01期
页码:
87-91
栏目:
出版日期:
2016-02-28

文章信息/Info

Title:
Based on the Factor Graph of MIMO-OFDM Time-varying Channel Estimation
作者:
肖素珍; 陈恩庆
郑州大学 信息工程学院,河南 郑州,450001
Author(s):
Chen Enqing;  Xiao Suzhen
School of Information Engineering, Zhengzhou University, Zhengzhou, Henan, 450001
关键词:
Keywords:
MIMO-OFDM; time-varying channel; channel estimation; factor graph; message passing algo-rithm
DOI:
10.3969/j.issn.1671-6833.201503064
文献标志码:
A
摘要:
提出了一种基于因子图的多输入多输出正濒分复用( MIMO-OFDM)时变信道估计算法.该算法在占用少量导频的基础上,建立一阶AR信道模型,使用消息传递算法进行MIMO-OFDM信道估计,并将该方法与LS算法、MMSE算法、基于Kalman滤波的信道估计算法进行比较.通过MATLAB仿真表明,该算法可以很好地估计MIMO-OFDM信道,算法复杂度低于MMSE算法,且在低信噪比情况下,估计性能优于其他的算法.
Abstract:
Based on the characteristics of the system struture of MIMO-OFDM, a novel MIMO-OFDM channel estimation algorithm based on factor graph is proposed. The algorithm uses a small amount of pilot carrier, es-tablishes first-order AR channel model, and uses the message passing algorithm to estimate the MIMO-OFDM channel. Compared with other traditional algorithms, the MATLAB simulation shows that this algorithm can accurately estimate the MIMO-OFDM channel, with lower complexity than MMSE algorithm. Especially under the condition of low SNR,the estimation performance of MIMO-OFDM is better than other algorithms.

相似文献/References:

[1]穆晓敏,曹丽果,陆彦辉..一种新的基于粒子滤波的OFDM时变信道估计方法[J].郑州大学学报(工学版),2011,32(02):84.[doi:10.3969/j.issn.1671-6833.2011.02.021]

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