| 扩频系统中自适应窄带干扰抑制滤波器对PN码捕获性能的影响 |
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| 引用本文： | 李峥嵘,桑怀胜,王飞雪,雍少为.扩频系统中自适应窄带干扰抑制滤波器对PN码捕获性能的影响[J].电子学报,2002,30(12):1768-1771. |
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| 作者姓名： | 李峥嵘 桑怀胜 王飞雪 雍少为 |
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| 作者单位： | 国防科技大学ATR国防重点实验室,湖南长沙 410073 |
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| 基金项目： | 国防科技预研项目资助(No.D99-21) |
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| 摘 要： | 本文通过详细的理论推导,分析了扩频系统中自适应窄带干扰抑制滤波器对PN码捕获性能的影响;并根据滤波器理论,给出了自适应窄带干扰抑制滤波器的幅频响应、群延迟响应和相应的仿真结果.理论分析与仿真结果表明,自适应干扰抑制滤波器在抑制窄带干扰的同时,也抑制了部分扩频信号,从而形成较大的相关旁瓣,对PN码捕获性能产生严重的影响.
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| 关 键 词： | 扩频系统 自适应窄带干扰抑制滤波器 PN码捕获 |
| 文章编号： | 0372-2112(2002)12-1768-04 |
| 收稿时间： | 2001-06-01 |
PN Code Acquisition Performance Effects of Adaptive Narrow-Band Interference Suppression Filters in Spread-Spectrum Systems |
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| LI Zheng-rong,SANG Huai-sheng,WANG Fei-xue,YONG Shao-wei.PN Code Acquisition Performance Effects of Adaptive Narrow-Band Interference Suppression Filters in Spread-Spectrum Systems[J].Acta Electronica Sinica,2002,30(12):1768-1771. |
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| Authors: | LI Zheng-rong SANG Huai-sheng WANG Fei-xue YONG Shao-wei |
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| Affiliation: | ATR National Defence Key Lab,National Univ.of Defense Technology,Changsha,Hunan 410073,China |
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| Abstract: | 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. |
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| Keywords: | spread-spectrum systems adaptive narrow-band interference suppression filters PN code acquisition |
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