DIGITAL COMMUNICATION SYSTEM AND METHOD FOR OPERATING THE SYSTEM WHICH CAN IMPROVE EQUALIZATION PERFORMANCE ACCORDING TO CHANNEL STATE

摘要

A digital communication system having an improved equalization performance according to a channel state and a method for operating the syst em are disclosed. The digital communication system includes: a channel state judgin g section; and an equalizing section for compensating for a channel distortion of the inputted signal by initializing a parameter on the basis of the judged chann el state. The channel state judging section includes: a channel prediction section f or predicting the channel state of the inputted signal by using the field sync; an N number of buffers for storing the state information regarding the N number o f channels predicted by means of the N number of the field syncs; a calculatin g section for calculating a difference between the state information regarding the N number of channels stored in the N number of buffers; and a judging section for judgin g the channel state on the basis of the calculated difference.