Transmitting and Receiving Method having Distortion Reduction Caused by a Time-varying Channel in an Orthogonal Frequency Division Multiplex System

The present invention relates to a method of transmitting and receiving an orthogonal frequency division multiplexing system having a time varying channel distortion removal function. In the present invention, transmission of each sub-channel to analyze mathematically, and calculating the weight based on them to approximate the channel variation of each path causing a time-varying channel distortion in a high-speed moving environment defines the M subchannels to the one data group, and of transfers are assigned to the transmission data. Thereafter, the combining the signals of these M subchannels by the receiver, and performs the demodulation. This, according to the present invention, greatly reduces the distortion improving the bit error rate due to time-varying channel, it is possible to obtain the effect to improve the channel estimation performance. Possible to obtain a diversity gain in an OFDM system, at the same time to reduce the distortion caused by the time-varying channel with multiple antennas operating in the high speed mobile environment, it can support high-speed mobility.