VDSL SYSTEM BASED ON DMT LINE CODING METHOD AND METHOD FOR DETERMINING CYCLIC PREFIX SAMPLE LENGTH IN THE SAME SYSTEM

摘要

PURPOSE: A VDSL(Very High bit-rate Digital Subscriber Line) system based on a DMT(Discrete Multi-Tone) line coding method, and a method for determining a cyclic prefix sample length in the same system are provided, which estimates an optimum cyclic prefix length on the ground of the amount of relation between a transmission signal and a cyclic prefix sample. CONSTITUTION: The VDSL system is based on a DMT line coding method and includes a transmitter part transmitting data including a cyclic prefix sample through a channel, and a receiver part receiving data including the cyclic prefix sample through the channel. A control part controls initialization operation and data transmission operation by controlling the transmitter part and the receiver part. And a cyclic prefix sample length estimating part estimates an optimum length of the cyclic prefix sample on the ground of the amount of relation between the cyclic prefix sample and other data.