Based on the Factor Graph of MIMO-OFDM Time-varying Channel Estimation
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37卷
Number of periods:
2016 01
Page number:
87-91
Column:
Public date:
2016-02-28
- Title:
- Based on the Factor Graph of MIMO-OFDM Time-varying Channel Estimation
- Keywords:
- MIMO-OFDM; time-varying channel; channel estimation; factor graph; message passing algo-rithm
- CLC:
- -
- DOI:
- 10.3969/j.issn.1671-6833.201503064
- 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.
- References:
- -
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