| 子带自适应滤波器组参数的选取及其影响 |
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| 引用本文： | 王冲,郑建生,郭文飞. 子带自适应滤波器组参数的选取及其影响[J]. 计算机工程与设计, 2012, 33(5): 2068-2072 |
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| 作者姓名： | 王冲 郑建生 郭文飞 |
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| 作者单位： | 1. 武汉大学卫星定位技术研究中心,湖北武汉,430079
2. 武汉大学电子信息学院,湖北武汉,430079 |
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| 基金项目： | 中央高校基本科研业务费专项基金项目(20102120101000120) |
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| 摘 要： | 为了研究自适应滤波在噪声消除,干扰抑制以及雷达信号处理中的广泛应用,对滤波器各影响因素进行了分析,提出了各参数的设计规则.以自适应滤波理论为基础,将信号划分成不同的子带通过原型分析综合滤波器组,将处理后的各路信号叠加可恢复原信号.选择合理的参数设置滤波器可以使系统的综合性能最优,同时可以将信号在传输过程中造成的损失减小到最低.通过大量仿真验证了该参数选取规则的准确性和有效性.
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| 关 键 词： | 自适应滤波 过采样DFT调制 子带分析综合滤波器 通带混叠失真 截止频率 系统总响应误差 |
Parameters' selection and impact of sub-band adaptive filter |
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| WANG Chong , ZHENG Jian-sheng , GUO Wen-fei. Parameters' selection and impact of sub-band adaptive filter[J]. Computer Engineering and Design, 2012, 33(5): 2068-2072 |
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| Authors: | WANG Chong ZHENG Jian-sheng GUO Wen-fei |
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| Affiliation: | 1.Engineering Research Center for Satellite Positioning System,Wuhan University,Wuhan 430079,China; 2.School of Electronic Information Engineering,Wuhan University,Wuhan 430079,China) |
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| Abstract: | In order to study the adaptive filter which have applications in fields such as eliminating noise,restraining interference and processing radar signal,The factors are researched and parameters of the design rules are analyzed.Based on the adaptive filters we divide the signal into different sub-bands,via the prototype analysis and synthesis filters,the output signals are from all the synthesis filters,we can better restore the original signals,decrease the in-band residual aliasing distortion and pass-band response error.Selecting the reasonable parameters can obtain an optimal performance.The rules are proved to be effective. |
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| Keywords: | adaptive filters oversampled DFT modulated filters the sub-bands analysis and synthesis filters in-band aliasing distortion cut-off frequency total system response errors |
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