Patent ID: 8000400

Claim:
An OFDM receiving method for receiving a signal multiplexed according to Orthogonal Frequency Division Multiplexing (OFDM) and applying Fast Fourier Transform (FFT) processing to the received signal to demodulate transmit data, comprising: providing a mobile body with a plurality of directional antennas having directivities that differ from one another and include directivity in a direction of moving or in a direction opposite the direction of moving and adopting these directional antennas as antennas of independent branches; calculating, prior to FFT processing, an average value of fading-variation in a multipath environment using an antenna received signal branch by branch; compensating the fading-variation based upon the average value branch by branch; and diversity-combining results of FFT processing from respective ones of the branches, wherein correlation between the received signal and a received signal one OFDM symbol time earlier is calculated and the average value of fading-variation in the multipath environment is calculated based upon a correlation vector obtained.