| M带余弦调制滤波器组的设计 |
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| 引用本文： | 张子敬,焦李成.M带余弦调制滤波器组的设计[J].电子学报,2001,29(1):84-86. |
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| 作者姓名： | 张子敬 焦李成 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室,西安 710071 |
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| 基金项目： | 国家自然科学基金!(No .69772 0 2 9)，国家“863”高技术资助项目基金!(No.863 31 7 0 3 0 5 99) |
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| 摘 要： | 本文提出了一种近似重构的M带余弦调制滤波器组的设计方法.该方法将原型滤波器表示成A(zL)B(z)的形式,通过优化低阶FIR滤波器A(z)的通带边缘频率,间接设计原型滤波器.在优化过程中,采用常用的Parks-McClellan算法设计滤波器A(z).文中给出的设计例子表明,该方法可获得很高阻带衰减的滤波器组.
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| 关 键 词： | 余弦调制滤波器组 近似重构 高阻带衰减 多速率 |
| 文章编号： | 0372-2112(2001)01-0084-03 |
| 收稿时间： | 1999-06-28 |
Design of M-Band Cosine-Modulated Filter Banks |
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| ZHANG Zi-jing,JIAO Li-cheng.Design of M-Band Cosine-Modulated Filter Banks[J].Acta Electronica Sinica,2001,29(1):84-86. |
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| Authors: | ZHANG Zi-jing JIAO Li-cheng |
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| Affiliation: | Key Lab.for Radar Signal Processing,Xidian University,Xi'an 710071,China |
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| Abstract: | A method for designing M band cosine modulated filter banks with near perfect reconstruction is proposed.The prototype filter is formulated as the form A(z L)B(z) and indirectly designed by varying the passband edge of A(z) with low order.In the course of the optimization procedure,the popular Parks McClellan algorithm is used to design A(z) .A design example is presented to show that cosine modulated filter banks with high stop attenuation can be achieved using the proposed method. |
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| Keywords: | cosine-modulated filter banks near perfect reconstruction high stopband attenuation multirate |
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