| 基于自适应IIR陷波滤波器的窄带干扰抑制技术 |
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| 引用本文： | 张平华,王玲. 基于自适应IIR陷波滤波器的窄带干扰抑制技术[J]. 现代雷达, 2006, 28(10): 56-58 |
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| 作者姓名： | 张平华 王玲 |
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| 作者单位： | 湖南师范大学工学院,长沙,410081 |
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| 摘 要： | 在存在窄带干扰时，扩频通信系统的性能可以通过使用各种不同的抗干扰滤波器来进一步提高。文中研究了二阶自适应格型IIR陷波滤波器在直扩通信中抗窄带干扰的应用，推导了系统信噪比改善因子和误比特率的闭合表达式。计算机仿真表明了该分析结果的正确性。
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| 关 键 词： | 窄带干扰 自适应格型IIR滤波 信噪比改善 误比特率 |
| 收稿时间： | 2006-06-18 |
| 修稿时间： | 2006-09-10 |
Rejection of Narrow-band Interference Using Adaptive IIR Notch Filter |
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| ZHANG Ping-hua,WANG Ling. Rejection of Narrow-band Interference Using Adaptive IIR Notch Filter[J]. Modern Radar, 2006, 28(10): 56-58 |
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| Authors: | ZHANG Ping-hua WANG Ling |
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| Affiliation: | Engineering College, Hunan Normal Univeristy, Changsha 410081, China |
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| Abstract: | In the presence of narrow-band interference (NBI), the performance of direct spread-spectrum systems (DSSS) can be improved by using various interference rejection filters. In this paper, the application of a second-order adaptive lattice IIR notch filter for rejection of NBI in DSSS is analyzed . Closed-form analytical expressions for signal-to-noise ratio (SNR), improvement factor and bit error ratio (BER) of the system are derived. Results of the analysis are varified computer simulations. |
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| Keywords: | narrow-band interference adaptive lattice IIR notch filter SNR BER |
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