A system is disclosed for use in a wireless communication system to
provide an estimated pilot signal. The system includes a receiver and a
front-end processing and despreading component in electronic
communication with the receiver for despreading a CDMA signal. A pilot
estimation component is in electronic communication with the front-end
processing and despreading component for estimating an original pilot
signal using a Kalman filter to produce a pilot estimate. A demodulation
component is in electronic communication with the pilot estimation
component and the front-end processing and despreading component for
providing demodulated data symbols. The Kalman filter is configured by an
offline system identification process that calculates parameters using a
prediction error method and a Gauss-Newton algorithm and generates state
estimates using the Kalman filter. The calculating and generating are
iteratively performed to train the Kalman filter for real-time operation.