Patent ID: 7076010

Claim:
An apparatus: for suppressing intersymbol interference in a received communication channel of a modem comprising: means for adjusting the sampling rate of the received communication channel; a time domain equalizer (TEQ) with a plurality of taps into the received communication channel and the TEQ responsive to an adjustment of the sampling rate by the means for adjusting to configure at least one of a number of taps and delays between the taps operating on the receive path and the TEQ including: a delay line accepting successive portions of a received communication channel; taps off of the successive portions of the delay line with each tap configured to scale each successive portion by an associated weighting coefficient to provide a corresponding scaled output; a summer coupled to the taps to sum the scaled outputs there from; a controller to varying at least one of: a length of the delay line, a number of the taps providing output to the summer and a number of successive portions of the received communication channel between taps; weighting modules each with an input coupled to a corresponding successive portion of the delay line and an output coupled to the summer, and each of the weighting modules configured to scale each corresponding successive portion by the associated weighting coefficient to provide the corresponding scaled output; and switches each associated with a corresponding weighting module to switchably control the coupling thereof between the delay line and the summer, and the switches operative to uncouple selected ones of the weighting modules to vary a number of the taps providing output to the summer.