US 2006/0050776 A1 · Vdsl system based on dmt line coding, and method for determining length of cyclic prefix samples using the system

Abstract

Disclosed is a VDSL (very high bit-rate digital subscriber line) system on the DMT line coding method basis and a method for determining a length of cyclic prefix samples using the system. The VDSL system comprises a transmitter data including cyclic prefix samples through a channel; a receiver for receiving the data including the cyclic prefix samples; a controller for controlling the transmitter and the receiver to control an initialization operation including handshake, training, channel analysis, and exchange, and a data transmission operation after the initialization operation; and a cyclic prefix sample length estimator for estimating an optimized length of the cyclic prefix sample on the basis of the correlation between the cyclic prefix sample and other data. According to the present invention, since no complex TEQ configuration required when fixing and using the length of the cyclic prefix sample is used, its configuration becomes simpler, and the optiized length of the cyclic prefix sample can be accurately determined.

Claims14

Dependent claims

A VDSL (Very high bit-rate Digital Subscriber Line) system on the basis of the DMT (Discrete MultiTone) line coding method, the VDSL system including a transmitter for transmitting data including a CP (cyclic prefix) sample through a channel, and a receiver for receiving the data including the CP sample through the channel, comprising:

a controller for controlling the transmitter and the receiver to control initial operations including a handshake operation, a training operation, and a channel analysis and exchange operation, and a data transmission operation after the initial operations;
and
a CP sample length estimator for estimating an optimized length of the CP sample on the basis of the correlation status between the CP sample included in the data received through the channel and residual data.

In a VDSL (Very high bit-rate Digital Subscriber Line) system on the basis of the DMT (Discrete MultiTone) line coding method, the VDSL system including a transmitter for transmitting data including a CP (cyclic prefix) sample through a channel;

a receiver for receiving the data including the CP sample through the channel;
a controller for controlling the transmitter and the receiver to control initial operations and a data transmission operation;
and a CP sample length estimator for estimating an optimized length of the CP sample on the basis of the correlation status of the data received through the channel, a method for determining a CP sample length in the VDSL system on the DMT line coding method basis comprising:
(a) the controller transmitting the maximum length of the CP sample through the transmitter;
(b) the CP sample length estimator receiving data including the CP of the transmitted maximum length through the receiver;.
(c) the CP sample length estimator estimating the optimized length of the CP sample on the basis of a correlation status between the CP sample included in the received data and residual data, and transmitting-the estimated optimized length to the controller;
and
(d) the controller transmitting the estimated optimized length of the CP sample through the transmitter.

5 more elements

Dependencies are inferred from the claim text.

Vdsl system based on dmt line coding, and method for determining length of cyclic prefix samples using the system

Life of this patent

Vdsl system based on dmt line coding, and method for determining length of cyclic prefix samples using the system

Life of this patent

Abstract

Claims14