Patent ID: 8457190

Claim:
A Decision Feedback Equalizer (DFE) comprising: a Feed Forward Equalizer (FFE) configured to process an unequalized data signal to provide a FFE data signal; a Feedback Equalizer (FBE) configured to process a decision data signal to provide a FBE data signal; a loop unrolling device configured to add a direct current (DC) offset, using a summer block, to a combination of the FFE data signal and the FBE data signal to provide an offset data signal and to process the offset data signal to provide an equalized data signal, wherein the DC offset is determined based on: a FBE tap weight value, and at least one of a vertical eye asymmetry in the unequalized data signal and parameter mismatches of devices used to implement the DFE; and a decision device configured to process the equalized data signal to provide the decision data signal.