Patent ID: 8855256

Claim:
An adaptive filtering arrangement for providing bit-synchronous, time-dependent filtering of a time-varying analog information signal applied as an input thereto, the arrangement comprising a time-dependent low pass filter having as an input the time-varying analog information signal including both data and noise components, the time-dependent low pass filtering arrangement including at least one adaptive resistive element that exhibits a varying resistance value as a function of time so as to provide a varying filter bandwidth as a function of time; and a modifying element responsive to a recovered clock signal for creating a time-varying control signal that is applied as an input to the adaptive resistive element, wherein the time-varying control signal is synchronous with a baud interval of a created output signal such that an instantaneous bandwidth of the time-dependent low pass filter is synchronous with the baud interval and exhibits a relatively small bandwidth during a central portion of the baud interval and exhibits a relatively large bandwidth during a transition from one baud interval to the next.