Patent ID: 6728230
Filing Date: 2004-04-27
Classification: H04B,H04J,H04L

Abstract:
A method for demodulating a received signal comprising:filtering an in-phase component of a complex despread signal to produce an in-phase pilot filter signal; filtering a quadrature-phase component of the complex despread signal to produce a quadrature-phase pilot filter signal; multiplying the in-phase component by a Walsh code to produce an in-phase Walsh despread signal; multiplying the quadrature-phase component by the Walsh code to produce a quadrature-phase Walsh despread signal; multiplying the in-phase Walsh despread signal by the in-phase pilot filter signal to produce a first phase-adjusted signal; multiplying the quadrature-phase Walsh despread signal by the quadrature-phase pilot filter signal to produce a second phase-adjusted signal; and adding the first phase-adjusted signal to the second phase-adjusted signal to produce a first soft decision data signal.