Patent ID: 6301311
Filing Date: 2001-10-09
Classification: H04B,H04L

Abstract:
A method for synchronizing a received signal with a transmitted signal comprising the steps of:(a) converting the received signal into in-phase (I) and quadrature phase (Q) components using an estimate of frequency error (.DELTA.f) and phase offset (.DELTA..phi.) between the received signal and the transmitted signal;(b) determining a delay (.tau.) between the received signal and the transmitted signal with respect to a pseudo-noise (PN) spreading sequence applied to the transmitted and received signals using the I and Q components of the received signal;(c) determining a value for the estimate of the frequency delay (.DELTA.f) and the phase offset (.DELTA..phi.) between the received signal and the transmitted signal using the delay (.tau.); and(d) feeding back the value for the estimate determined in step (c) to be used as the estimate for converting in step (a).