Equalizing method and estimated the equalizer and channel estimation apparatus and

摘要

The present invention provides a channel estimation device obtained equalizing excellent characteristics by improved than conventional channel estimation accuracy used for weight calculation of the equalization filter. Using subcarriers copy number K channel estimation estimated by the correlation processing unit 14, a subcarrier copying unit 20 copies the K subcarriers end. IDFT unit 15 converts the channel response in the time domain channel estimation obtained by the subcarrier copying unit 20. Noise path removing unit 16, to remove the noise path from the channel response, which is the output of the IDFT unit 15. DFT unit 17 outputs the channel estimation values ​​in the frequency domain by DFT and the channel response and noise path removal by the noise path removing unit 16, and noise suppression. Inputs the channel estimation values ​​in the frequency domain, which is the output of DFT section 17, the weight calculation unit 5 calculates the equalization weight.