| 噪声对消在信号处理系统中的应用 |
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| 引用本文： | 朱小芳,陈亚光.噪声对消在信号处理系统中的应用[J].现代电子技术,2006,29(24):86-88. |
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| 作者姓名： | 朱小芳 陈亚光 |
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| 作者单位： | 中南民族大学,电信学院,湖北,武汉,430074 |
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| 摘 要： | 论述基于LMS算法的自适应滤波器噪声对消的工作原理,以及基于AR模型的信号分析方法。在这两种方法相结合的情况下,能有效去除信号的噪声。对含有瞬态干扰的微弱信号,用AR模型法估计出噪声的系数并预测噪声波形,通过自适应滤波器噪声对消原理进行滤波,最后在Matlab环境下进行仿真试验,结果表明该方法具有较好的去噪效果。
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| 关 键 词： | 自适应滤波器 LMS算法 AR模型 噪声对消 |
| 文章编号： | 1004-373X（2006）24-086-03 |
| 收稿时间： | 2006-05-25 |
| 修稿时间： | 2006年5月25日 |
Application of Noise Cancellation in Signal Processing System |
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| ZHU Xiaofang,CHEN Yaguang.Application of Noise Cancellation in Signal Processing System[J].Modern Electronic Technique,2006,29(24):86-88. |
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| Authors: | ZHU Xiaofang CHEN Yaguang |
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| Affiliation: | Electronic Information Institute,South- Central University for Nationalities,Wuhan,430074 ,China |
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| Abstract: | The article introduces the working principle of adaptive noise canceller on LMS algorithm and the method of analyzing signal based on AR model,by the combination of two methods,the result of denoising can be effective.For the weakness signal which contains interference transient,we use AR model to evaluate the coefficients and to predict the waveform of the noise,make these signal through the adaptive filter using noise cancellation.Emulational validation is done by the software Matlab and the result shows that noise cancellation is effective in reducing the noise of original signal. |
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| Keywords: | adaptive filter LMS algorithm AR model noise cancellation |
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