Equalization system used in a communication receiver and method for executing equalization thereof

The invention relates to an equalization system used in a communication receiver and method thereof. The method com method for performing equalization in a communication receiver, comprising: generating a decision output from a rear equalizer of the communication receiver; estimating an estimated error by comparing the decision output of the rear equalizer and equalization output of a front equalizer of the communication receiver; and adjusting the tap coefficients of the front equalizer according to the estimated error, wherein the communication receiver has more than two equalizer stages, and the front equalizer isat an earlier stage than the rear equalizer. The application of the equalization system used in a communication receiver and method thereof reduces channel distortion.