Patent ID: 7042928

Claim:
In a wireless communication system, a method for estimating an original pilot signal, the method comprising: receiving a CDMA signal; despreading the CDMA signal; obtaining a pilot signal from the CDMA signal; and estimating the original pilot signal using a pilot estimator that includes a Kalman filter to produce a pilot estimate, wherein the Kalman filter is determined through use of a prediction error method based on an innovations representation of the original pilot signal, and wherein the Kalman filter is further configured to calculate the filtered estimate according to the following: x ^ k + = x ^ k + L ^ a ^ ⁢ e k where: {circumflex over (x)} k + is the filtered estimate; {circumflex over (x)} k is a single-step predictor; e k is the approximate innovations; and {circumflex over (L)},â are estimated parameters.