| 最小延迟M带余弦调制小波滤波器组设计 |
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| 引用本文： | 王建卫,张泽银.最小延迟M带余弦调制小波滤波器组设计[J].信号处理,2003,19(3):242-246. |
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| 作者姓名： | 王建卫 张泽银 |
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| 作者单位： | 浙江大学玉泉校区数学系,杭州,310027 |
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| 摘 要： | 本文推导了最小延迟任意长度M带余弦调制小波滤波器组的完全重构条件。选择低通原型滤波器最大阻带衰减为优化的目标函数,通常的优化目标函数选用最小平方逼近的方法,本文提出了使用最佳一致逼近的方法。最后用黄金分割和牛顿迭代方法解决非线性约束优化极值问题,得到满足几乎完全重构和小波正则性条件的低通原型滤波器。
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| 关 键 词： | 最小延迟 任意长度 调制滤波器组 最佳一致逼近 |
| 修稿时间： | 2002年11月17 |
Design of Lowest-Delay M-Band Cosine-Modulated Wavelet Filter Banks |
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| Wang Jianwei Zhang Zeyin.Design of Lowest-Delay M-Band Cosine-Modulated Wavelet Filter Banks[J].Signal Processing,2003,19(3):242-246. |
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| Authors: | Wang Jianwei Zhang Zeyin |
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| Abstract: | A method for designing lowest-delay arbitrary length M-band cosine-modulated wavelet perfect reconstruction filter banks is deduced. The stopband error of prototype filter is used to be the objective function for optimization. Instead of the method of least square approximation, this paper introduce the method of best uniformity approximation. We use the method of golden section and Newton iteration to solve the nonlinear constrained minimization problem. As a result, the prototype filter of near perfect reconstruction and wavelet regular condition could be obtained. |
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| Keywords: | lowest-delay arbitrary length modulated filter banks best uniformity approximation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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