Title :
Performance analysis of a wavelet based WBCAF method for time delay and Doppler stretch estimation
Author :
Niu, X.X. ; Ching, P.C. ; Chan, Y.T.
Author_Institution :
Dept. of Electronic Engineering, Chinese University of Hong Kong, Hong Kong
Abstract :
A wavelet based method for time delay and Doppler stretch estimation has been proposed. It makes use of the relationship between the wideband cross ambiguity function (WBCAF) and the cross wavelet transform of the received signals. This paper derives the Cramer-Rao lower bound (CRLB) and analyses the performance of the algorithm. It is found that under high SNR, the method is asymptotically unbiased, and the variances of the estimation parameters are fairly close to the CRLB. Simulation results are given to corroborate the theoretical derivation.
Keywords :
Delay effects; Doppler effect; Estimation; Reactive power; Signal to noise ratio; Wavelet transforms;
Conference_Titel :
European Signal Processing Conference, 1996. EUSIPCO 1996. 8th
Conference_Location :
Trieste, Italy
Print_ISBN :
978-888-6179-83-6
