OFDM RECEPTION DEVICE, OFDM RECEPTION METHOD, OFDM RECEPTION CIRCUIT, INTEGRATED CIRCUIT, AND PROGRAM

摘要

A synchronization section 101 specifies a position of a guard interval correlation's center of gravity based on a guard interval correlation value, and calculates a carrier-direction shift amount Fshift. An equalization section 102 shifts the passband of a carrier interpolation filter of a carrier interpolation section 111 by the carrier-direction shift amount Fshift calculated by the synchronization section 101. This shift processing causes the delay profile to be kept in the center of the passband of the carrier interpolation filter, for any FFT window position. This enables transmission path estimation without limiting a range of an FFT window position even if the passband of the carrier interpolation filter is narrower than a guard interval of an OFDM signal.