Patent ID: 7088793

Claim:
An equalizer for use with complex modulation modems and for operating in noisy communications channel environments to reduce intersymbol interference comprising: an equalizer filter for receiving an input data signal and for adapting to compensate for the noisy communications channel environments and reduce intersymbol interference to the input signal; a branch metric computer connected to the equalizer filter for demodulating the equalizer filter adapted input data signal; a decision device connected to the branch metric computer for delivering an alpha value and starting phase information and confidence values from the demodulated input data signal at a reduced latency; a gain determination function connected to the equalizer filter and to the decision device for receiving the confidence values and for determining adaptation gain for the equalizer filter; a remodulator connected to the decision device to receive the alpha value and starting phase information and for remodulating the alpha value and starting phase information into a remodulated data signal; and a summing function connected to the equalizer filter and to the remodulator for comparing the remodulated data signal to a delayed version of the input signal to generate an error signal and to provide the error signal to the equalizer filter to adjust the equalizer filter.