Patent ID: 8848774
Filing Date: 2014-09-30
Classification: H04L

Abstract:
1. A method of adjusting a setting of a linear equalizer, comprising: determining a change to a virtual decision feedback equalizer (DFE) tap weight value of a predefined metric according to a data signal and an error signal generated through a decision device coupled to an output of the linear equalizer, a virtual DFE related to the virtual DFE tap weight value being implemented with no feedback circuit between the decision device and the output of the linear equalizer, a channel response related to a requirement of equalization being unknown in advance, and the virtual DFE tap weight value being related to an estimate of the channel response at a corresponding time instant; using the change in the virtual DFE tap weight value to algorithmically generate a modification in the setting of the linear equalizer based on utilizing the linear equalizer as a feedback of the virtual DFE; and adjusting the setting of the linear equalizer until the predefined metric is optimized, wherein the generated modification in the setting of the linear equalizer further comprises: