APPARATUS AND METHOD FOR REMOVING PHASE JITTER IN CABLE MODEM

摘要

An apparatus for removing the phase jitter in a cable modem and a method thereof are provided to remove the phase jitter in a slicer of a carrier restoring device by using an output value of a low pass filter within an automatic gain control device. A power detector(410) outputs the mean of an inputted signal. An error measurement unit(420) calculates the error value between the mean value received from the power detector and a reference signal. The first loop filter(430) controls the amplitude of the inputted signal based on the calculated error value and then outputs the controlled signal to a low-pass filter(440). The low-pass filter outputs the signal to a gain control amplifier(400).