Patent ID: 8422544

Claim:
An apparatus for use in a wireless communication system wherein the apparatus estimates a transmitted signal, the apparatus comprising: at least one antenna coupled to a receiver for receiving a wireless signal that comprises a pilot channel and at least one other channel; a matched filter for matched filtering with a not oversampled input rate and then oversampling the wireless signal to provide an oversampled filtered wireless signal; a fractionally spaced equalizer for estimating the transmitted signal using the oversampled filtered wireless signal, wherein the fractionally spaced equalizer includes a filter with a plurality of taps that may be adjusted through use of an adaptive algorithm that uses an estimated pilot estimated from the received wireless signal, wherein the plurality of taps are adjusted through the adaptive algorithm every Nth pilot symbol interval, where N is a positive integer, wherein the value of N is changed based on a velocity of a device in the wireless communication system, and wherein the pilot channel was transmitted with the at least one other channel; and a component to extract the estimated pilot and to provide the estimated pilot to the adaptive algorithm, wherein the fractionally spaced equalizer is further configured for adjusting the plurality of taps through use of the adaptive algorithm, the adaptive algorithm performing adaptation when channel conditions have changed such that the fractionally spaced equalizer does not match current channel conditions.