Narrowband Interference Suppression in DSSS System Based on Frequency Shift Wavelet Packet Transform

摘要：

A narrowband interference suppression algorithm which combined wavelet packet transform with frequency shift is proposed It first confined the interference in the center of a subband. Then,the signal is decomposed by wavelet packet transform,and interference is suppressed under subband power ratio rule. Finally,the signal is de-noised by softthresholding before signal reconstructed. Both analysis and simulation demonstrate that the interference is completely suppressed by frequency shift wavelet packet transform,the signal-to-noise ratio is improved by soft threshold signal denoising,the single dwell time of acquisition is reduced and the acquisition performance is improved.

关键词： wavelet packet transform narrowband interference signal de-noising direct sequence spread spectrum

作者: Lanying Zhang Sijie Yuan Yuan Chen Jun Yang

作者单位: TT&C Research Center,Academy of Equipment Command & Technology Beijing 101416,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1410-1414

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）