Patent ID: 8077765

Claim:
A system for adapting an equalizer, the system comprising: a channel module that receives input data and outputs a channel output comprising a noiseless component and a noise component; a filter module that filters the channel output to obtain a filter sample; a detector module that processes the filter sample to estimate the input data; a target response module that processes the estimated input data to obtain a target response output, wherein the target response output comprises a desired response of the filter module; and a channel response module that processes the estimated input data to obtain a noiseless channel output, wherein the noiseless channel output comprises an approximation of the noiseless component of the channel output, wherein the filter module is adapted based on the channel output, the filter sample, the target response output, and the noiseless channel output, wherein the filter module is adapted based on an error signal comprising a difference between the filter sample and the target response output, and wherein the filter module is adapted based on a product of i) the error signal and ii) a combination of the channel output and the noiseless channel output.