Wireless wireless communication system based on the orthogonal frequency division multiplexing and method for channel compensation

The present invention relates to an orthogonal frequency division multiplexing (OFDM) based wireless communication system and a channel compensation method of operating a frequency selectable channel. In an embodiment of the present invention, the amplitude of the channel to reduce the error probability of the average not more than interval as a way to improve the overall performance of the system, the configuration N-point IDFT on the IDFT adding the first and third transmitting end to contain a to be transmitted to perform the two inverse discrete Fourier transform (IDFT) on the binary information signal. And, the receiving end of the DFT unit 160, also the first and the 3 N-point DFT unit and the channel prediction / interpolation, the channel compensation unit (Channel Estimation and Interpolation) and a 2 N-point DFT unit, including that formed by the transmitter from It performs two discrete Fourier transform (DFT) for the signals received. Through this, the amplitude of the channel reduces the probability of error occurrence in a small region can improve the overall error performance, as well as at least twice, and can ensure a data transfer rate or more, with the same frequency investment double It is to ensure cost-effectiveness.Orthogonal Frequency Division Multiplexing, channel fading, channel compensation, interleaving / deinterleaving, amplitude