Patent ID: 9722819
Date: 2017-08-01
CPC Classifications: H04B,H04L

Claim:
1. A distortion compensation system comprising: a first communication node including a first reception unit and a first transmission unit, the first reception unit including an equalizer and the equalizer including a first digital filter unit, and the first transmission unit including an emphasis circuit and the emphasis circuit including a second digital filter unit; and a second communication node including a second transmission unit, and the second transmission unit transmitting through a first transmission line a training pattern determined in advance before receiving normal data from the first transmission unit of the first communication node through the first transmission line, wherein the first communication node receives the training pattern transmitted from the second transmission unit of the second communication node over the first transmission line using the first reception unit, the equalizer converges a filter constant of the first digital filter unit so that an error with respect to the training pattern to be received is converged, the first transmission unit of the first communication node performs a distortion compensation on the normal data to be transmitted using the converged filter constant of the first digital filter unit as at least a part of a filter constant of the second digital filter unit of the emphasis circuit, and then transmits the normal data over the first transmission line, wherein the first transmission line is an only transmission line between the first communication node and the second communication node, and wherein the first transmission line includes a pair of differential communication cables.