Method and device for precise synchronization of PN code in wide-band CDMA system

The precise PN code synchronizing process includes oversample receiving signal to form early and late demodulated sample data; early and late sample data to produce tracking error signal; demodulating sample data to obtain demodulated data; estimation and hardware discrimination in demodulating data channel to compensate tracking error signal; and low-pass filtering after compensation; comparisonwith preset threshold after filtering while regulating code plate clock. The base-band synchronizing receipt and demodulation device adopting the said process includes sampler, searcher, controller, multiple aperture synthesizer and synchronizing demodulation finger peak set. The present invention has low tracking jitter, less noise and high overall performance.