PN Code Acquisition Performance Effects of Adaptive Narrow-Band Interference Suppression Filters in Spread-Spectrum Systems
Yong Shao-wei · Dianzi xuebao · 2002
This paper has analyzed the PN code acquisition performance effects of adaptive narrow-band interference suppression filters in spread-spectrum systems based on detailed theoretical derivation. And complied with the theory of filters, the amplitude frequency responses and group delay responses of adaptive narrow-band interference suppression filters, as well as the simulated results,are presented.These theoretical and simulated results show that because of narrow-band interferences and part of spread-spectrum signal being rejected by the adaptive interference suppression filter in the same time,large side-lobes will be formed in the output of correlator and the performance of PN code acquisition will be seriously affected.