Patent ID: 7702001

Claim:
A method for offset time tracking in a non-negligible multipath spacing environment, the method comprising: receiving signals in an environment encompassing an antenna diversity system, the antenna diversity system comprising a plurality of antennas each transmitting a modulated signal; demodulating a first modulated signal of the plurality of modulated signals into a first demodulated signal in response to a first offset, a first data despreading sequence, and a first pilot estimate, wherein the first modulated signal is from a first transmit antenna from the plurality of antennas; demodulating a second modulated signal of the plurality of modulated signals into a second demodulated signal in response to a second offset, a second data despreading sequence, and a second pilot estimate, wherein the second data despreading sequence is different from the first data despreading sequence, and wherein the second modulated signal is from a second transmit antenna from the plurality of antennas; generating a first error signal for the first demodulated signal in response to sampling of a pilot signal, associated with the first modulated signal, a predetermined time prior to the first offset and a predetermined time subsequent to the first offset; generating a second error signal for the second demodulated signal in response to sampling of a pilot signal, associated with the first modulated signal, a predetermined time prior to the second offset and a predetermined time subsequent to the second offset; generating a first updated offset in response to the first time error signal; and generating a second updated offset in response to the second time error signal.