Patent ID: RE43402

Claim:
A communications receiver comprising: a time domain equalizer; a frequency domain equalizer; and an update mechanism configured to update both the time domain equalizer and the frequency domain equalizer based upon performance of a communications channel from which the communications receiver receives data, wherein updating the time domain equalizer includes : causing the time domain equalizer to operate with a first set of coefficients, determining first performance data that reflects performance of the time domain equalizer when the time domain equalizer is operating with the first set of coefficients, changing the coefficients used by the time domain equalizer so that the time domain equalizer operates with a second set of coefficients, determining second performance data that reflects performance of the time domain equalizer when the time domain equalizer is operating with the second set of coefficients, selecting for use by the time domain equalizer, based upon the first performance data and the secondperformance data, either the first set of coefficients or the second set of coefficients, if the first set of coefficients is selected for use, then changing the coefficients used by the time domain equalizer so that the time domain equalizer operates with the first set of coefficients, and if the second set of coefficients is selected for use, then causing the time domain equalizer to continue to operate with the second set of coefficients.