Patent ID: 6650698
Filing Date: 2003-11-18
Classification: H04L

Abstract:
A server-side equalization system, comprising:a primary communication channel for transmission of a primary signal; a secondary communication channel for transmission of a secondary signal; a client communication device sending the primary signal and having a pre-equalization module communicatively coupled to the primary communication channel, the pre-equalization module for modifying the primary signal being sent by the client communication device; a server communication device having a linear equalizer communicatively coupled to the primary communication channel for receiving data from the primary communication channel; a sampling module communicatively coupled to the primary communication channel for sampling the primary signal; and a non-linear decision feedback equalizer communicatively coupled to the secondary communication channel for providing pre-equalization coefficients to the pre-equalization module of the client communication device based on analysis of samples taken from the sampling module, the pre-equalization coefficients being used by the pre-equalization module for correcting non-linear distortions in the primary signal being sent upstream to the server communication device, and wherein the client communication device performs a portion of the analysis of the samples taken by the sampling device for developing the pre-equalization coefficients.