Patent ID: 7672382

Claim:
An OFDM receiving method for receiving a signal multiplexed according to Orthogonal Frequency Division Multiplexing (OFDM) and applying Fast Frequency Transform (FFT) processing to the received signal to demodulate transmit data, comprising the steps of: providing a mobile body with a plurality of directional antennas having directivities that differ from one another and include a directivity in a direction of moving or in a direction opposite the direction of moving; selecting a directional antenna in such a manner that Doppler shift that is caused by movement of the mobile body will keep a constant sign that is positive or negative; calculating, prior to FFT processing, an average value of fading-variation in a multipath environment using a received signal from the antenna that has been selected; and compensating the fading-variation based upon the average value, wherein the average value is attenuated and fading-variation in the multipath environment is compensated based upon a value obtained by attenuation.