Patent ID: 6771692
Filing Date: 2004-08-03
Classification: H04B

Abstract:
A method for offset time tracking in a non-negligible multipath spacing environment encompassing an antenna diversity system, the antenna diversity system comprising a plurality of antennas each transmitting a modulated signal, the method comprising:demodulating each of the plurality of modulated signals based on a time offset, a plurality of data despreading sequences, and a plurality of pilot estimates, each signal having a different data despreading sequence of the plurality of data despreading sequences and a different pilot estimate of the plurality of pilot estimates; generating a plurality of time tracking error signals, one for each of the plurality of demodulated signals, in response to a pilot despreading sequence for each of the plurality of demodulated signals; generating an average time tracking error signal in response to the plurality of time tracking error signals; and generating an updated offset in response to the average time tracking error signal.