Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor

The invention claims for example CDMA or the W-CDMA cellular communication system mobile wireless communication device for estimating Doppler a method for entering, wherein with improved anti-chirp method. Doppler entering the estimated based on first to retard (210) and second retards (220) autocorrelation or the autocovariance computing value; the second detention's amplitude is greater than the first same. (230) (240) For determining ratio first and second difference of the first difference. Estimation Doppler usually has a first ratio of square (260) and a ratio, and a reproduce of pantograph doubling factor; the reproduce of pantograph factor is fixed in the estimated function of the autocorrelation or the autocovariance function.