| 基于DFT的自适应窄带干扰抑制算法研究 |
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| 引用本文： | 蒋志勇,陈颖. 基于DFT的自适应窄带干扰抑制算法研究[J]. 电子工程师, 2009, 35(2): 26-28,32 |
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| 作者姓名： | 蒋志勇 陈颖 |
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| 作者单位： | 中国西南电子技术研究所,四川省成都市,610036 |
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| 摘 要： | 介绍了一种频域自适应窄带干扰抑制的方法，该方法基于离散DFF（傅里叶变换）技术，在频域采用N-∑算法自适应确定干扰抑制门限，可以有效地去除窄带干扰对宽带通信系统解调性能的影响，适用于DSSS（直接系列扩频）信号中去除强窄带干扰信号的影响。该算法简单高效，非常适合于数字硬件实现，实验和实测结果表明了该算法的有效性。
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| 关 键 词： | DSSS DFT 自适应窄带干扰抑制 |
A Study on Algorithm for Adaptive Narrowband Interference Suppression Based on DFT in DSSS Communication |
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| JIANG Zhiyong,CHEN Ying. A Study on Algorithm for Adaptive Narrowband Interference Suppression Based on DFT in DSSS Communication[J]. Electronic Engineer, 2009, 35(2): 26-28,32 |
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| Authors: | JIANG Zhiyong CHEN Ying |
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| Affiliation: | Southwest China Research Institute of Electronics Technology;Chengdu 610036;China |
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| Abstract: | A method for adaptive narrow-band interference suppression based on DFT is proposed. In the frequency domain, using N-Σ adaptive algorithm to determine interference rejection threshold is an effective way to remove the effect of narrow-band interference on broadband modem communication system performance. This algorithm is used to suppress the strong and narrowband interference in DSSS transmission, which is very fit to be implemented by digital hardware. The algorithm is easy to use and the effectiveness of the algorithm has been verified by test results. |
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| Keywords: | DSSS DFT |
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