| CIC抽取滤波器的高效改进算法研究 |
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| 引用本文： | 余 磊,江 桦.CIC抽取滤波器的高效改进算法研究[J].信息工程大学学报,2007,8(2):210-212,216. |
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| 作者姓名： | 余 磊 江 桦 |
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| 作者单位： | 信息工程大学,信息工程学院,河南,郑州,450002 |
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| 摘 要： | 文章运用分级抽取和多相滤波的方法改进传统CIC滤波器的结构,降低了系统工作频率,运用幅度改进函数(ACF)和外加级联余弦预滤波器的技术改进了滤波器频率响应,提出了一种高效的算法结构,改善了通带损耗,增大了阻带衰减,对CIC滤波器的实际应用和深入研究有着现实意义。
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| 关 键 词： | CIC滤波器 余弦预滤波器 多相滤波 |
| 文章编号： | 1671-0673（2007）02-0210-03 |
| 修稿时间： | 2006-10-162007-04-12 |
Study of Efficient Structure Based on CIC Filter |
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| YU Lei,JIANG Hua.Study of Efficient Structure Based on CIC Filter[J].Journal of Information Engineering University,2007,8(2):210-212,216. |
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| Authors: | YU Lei JIANG Hua |
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| Affiliation: | Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China |
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| Abstract: | This paper proposed an efficient structure for the realization of a comb decimation filter.Using a polyphase decomposition,the filter can be operated at lower rate.The improved magnitude response has been obtained by using a cascaded cosine prefilter and the filter sharpening approach of Kaiser and Hamming.The resulting structure does not have any filtering at the high input rate and has an improved magnitude characteristic. |
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| Keywords: | CIC filter cosine prefilter polyphase decomposition |
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