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1. (WO2010118588) CHANNEL ESTIMATION METHOD AND DEVICE OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM

Pub. No.:    WO/2010/118588    International Application No.:    PCT/CN2009/072451
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Fri Jun 26 01:59:59 CEST 2009
IPC: H04L 27/26
Applicants: BEIJING T3G TECHNOLOGY CO., LTD.
北京天碁科技有限公司
XU, Baicheng
许百成
MU, Xiuhong
牟秀红
FENG, Xinrui
冯心睿
Inventors: XU, Baicheng
许百成
MU, Xiuhong
牟秀红
FENG, Xinrui
冯心睿
Title: CHANNEL ESTIMATION METHOD AND DEVICE OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM
Abstract:
A channel estimation method and device of orthogonal frequency division multiplexing system are provided. The method includes the following steps: A. performing a calculation according to the frequency-domain channel estimations of the reference signals, and obtaining the delay spread of the channel(201); B. generating frequency-domain interpolation coefficients according to the delay spread(202); C. performing the interpolation disposal according to the frequency-domain interpolation coefficients and the frequency-domain channel estimations of the reference signals, and obtaining the whole frequency-domain channel estimations on the time-domain position of the reference signals(203); D. performing a calculation according to the frequency-domain channel estimations at different time-domain positions, and obtaining the coherent time of the channel(204); E. generating the time-domain interpolation coefficients according to the coherent time(205); F. performing the interpolation disposal according to the time-domain interpolation coefficients and the whole frequency-domain channel estimations in the range of coherent time, and obtaining the whole time-domain and frequency-domain channel estimations(206). According to the implementation of the present invention, the result of channel estimation can adapt itself to the change of the channel.