快速移动环境中的MIMO-OFDM系统信道估计算法

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Research on the algorithm for channel estimation on the MIMO－OFDM system in fast-moving environment

FU Wei-hong(1);SHI Fan(1);YANG Xiao-niu(2);LIU Nai-an(1)

(1) State Key Lab. of Integrated Service Networks, Xidian Univ., Xi′an 710071， China
(2) State Key Lab. of Communication Information Controlling, Jiaxing 314001， China

Received:1900-01-01 Revised:1900-01-01 Online:2006-06-20 Published:2006-06-20

Abstract

Abstract: Based on the analysis of the Doppler effect of the mobile channel, the performance of two MIMO-OFDM systems
(STTC-OFDM and SFBC-OFDM) in the fast-moving environment is studied. Then, the algorithm for channel estimation based on the
training sequence is extended into the fast-moving environment by introducing the space-frequency coding, the method of the
equal-interval pectinate pilot-inserting, and the complete Maximum-Likelihood space-frequency decoding. According to the
simulation results, the capability of anti-Doppler-effect of these two systems is perfect in the case of 256 sub-carriers, 32
equal-interval-inserting pilots. These results also show that this algorithm can adapt to the fast-moving channels.

Key words: keywords

CLC Number:

TN919.3

FU Wei-hong(1);SHI Fan(1);YANG Xiao-niu(2);LIU Nai-an(1).

Research on the algorithm for channel estimation on the MIMO－OFDM system in fast-moving environment

[J].J4, 2006, 33(3): 371-375.

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Research on the algorithm for channel estimation on the MIMO－OFDM system in fast-moving environment

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