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

摘要

Provided is an OFDM reception device which can effectively suppress degradation of the reception performance upon high-speed motion reception so as to enable a stable high-speed motion reception. For this, the device includes: a transmission path characteristic estimation unit which calculates a transmission path characteristic value indicating a phase amplitude distortion of an OFDM signal generated by propagation in a transmission path for each of subcarriers and calculates an n-degree differentiation of the transmission path characteristic path; and an interference component removal unit which uses the transmission path characteristic value for each subcarrier and the n-degree differentiation which have been obtained by the transmission path characteristic estimation unit so as to remove an interference component between the subcarriers from the OFDM signal. The transmission path characteristic estimation unit performs a filtering process on the transmission path characteristic value for each of the subcarriers in the symbol direction so as to perform oversampling at an interval shorter than one symbol and calculates the n-degree differentiation by using the transmission path characteristic value existing at an interval shorter than the two-symbol interval among the transmission path characteristic values obtained by the oversampling.