窄带干扰抑制的子带门限法

窄带干扰抑制的子带门限法

石光明;李阜东;焦李成;刘芳

(西安电子科技大学雷达信号处理重点实验室, 陕西西安 710071)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-04-20 发布日期:2003-04-20

Narrow-band interference suppression in DSSS by thresholding of the subband transform

SHI Guang-ming;LI Fu-dong;JIAO Li-cheng;LIU Fang

(Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)

Received:1900-01-01 Revised:1900-01-01 Online:2003-04-20 Published:2003-04-20

摘要/Abstract

摘要： 码分多址通信系统中主要存在3种干扰，即码间干扰，多址干扰和窄带干扰. 研究了用子带滤波器组消除直接序列扩频通信系统中的窄带干扰问题，提出了用子带门限法抑制窄带干扰的方法，给出了门限的估计算法. 对所提出的方法进行了仿真，并与基于滤波器组切除器的方法进行对比. 结果表明，该方法消除干扰效果不比已有的方法差，而且具有处理时间短的特点.

关键词: 子带信号处理, 窄带干扰抑制, 门限法

Abstract: We address the problem of suppressing a narrow-band interference(NBI) in direct-sequence spread spectrum(DSSS) communications with the subband transform. The signal and NBI are transformed into the subband domain with orthogonal filter bands. A subband threshold method is proposed for the suppression of NBI. The simulation results show that the performance of suppressing NBI by the propoed method is not lower than that by methods available, adn the proposed method needs less time to process signals than other methods.

Key words: subband signal processing, narrow-band interference suppression, thresholding

中图分类号:

TN911.4

石光明;李阜东;焦李成;刘芳. 窄带干扰抑制的子带门限法[J]. J4, 2003, 30(2): 146-150.

SHI Guang-ming;LI Fu-dong;JIAO Li-cheng;LIU Fang.

Narrow-band interference suppression in DSSS by thresholding of the subband transform

[J]. J4, 2003, 30(2): 146-150.

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