Patent ID: 6104983
Filing Date: 2000-08-15
Classification: H04B

Abstract:
A method for measuring the waveform quality of a CDMA signal, comprising:a correcting steps of correcting a carrier frequency shift of a digital measuring signal transformed to a base band signal;a demodulating step of demodulating said corrected digital measuring signal to obtain its demodulated data and amplitude value;an ideal signal generating step of generating an ideal signal based on said demodulated data, said amplitude value and estimated parameters;a parameter estimating step of estimating various parameters from said ideal signal and said corrected measuring signal;an optimization step of repeating the correction of said carrier frequency shift of said digital measuring signal in said correcting step and the generation of said ideal signal in said ideal signal generating step through utilization of said estimated parameters and repeating said demodulating step and said parameter estimating step until said estimated parameters are optimized; anda power coefficient computation step of computing the power coefficient of said measuring signal with said estimated parameters optimized.