Receiver and Phase Error Compensation Method for Discontinuous Multitone (DMT) System

摘要

A receiver and a phase error compensation method of a DMT system are disclosed. The apparatus includes an analog / digital converter for converting to a digital signal, a time domain equalizer for calculating a sample delay value, a delay storage according to the sample delay value, and the stored value in response to the first control signal in a DMT system using a subchannel. And a demodulator for demodulating, and a second buffer for receiving the shifted value, correcting it in response to the second control signal, converting it in parallel, a demodulator for correcting the phase error of each subchannel, and a serial signal. Digital phase-locked loop that receives a receiver and a pilot tone converted into a digital signal, calculates a phase error value, divides it into predetermined values, and separates the integer value and the decimal value, and the first value to compensate for the phase error. A first compensation control unit for outputting a control signal and a second for receiving the fractional value thereof, converting it for each subchannel, and outputting the second control signal; Comprising a phase control unit, and provides a phase error compensation method in accordance with this.