Abstract：In this paper, a phase estimator of serial search acquisition is proposed for Direct-Sequences Spread- Spectrum(DS/SS) systems. According to the cross correlation between the PN signal and the auxiliary signals with the different phases, an exact and valid estimation of improving direction and magnitude for the local PN generator is given, by which half the mean acquisition can be reduced. Analysis in theory and numerical results show that the proposed method can achieve acquisition at least two times faster than the conventional serial search method for the PN sequences which periods are more than 511 in normal operating condition.
2006, Vol. 28 
