| 一种满足精确重建条件的多采样率滤波器组的实现方法 |
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| 引用本文： | 杨思颖 周筑. 一种满足精确重建条件的多采样率滤波器组的实现方法[J]. 电路与系统学报, 1998, 3(1): 38-43 |
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| 作者姓名： | 杨思颖 周筑 |
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| 作者单位： | 上海交通大学电子工程系 |
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| 摘 要： | 多采样率滤波器组可以通过对线性相位低通原型滤波器进行余弦调制来实现，本文给出了一咱满足重建条件的采用余弦调制结构的系统实现方法，并指出了其多项元素矩阵无损的充分必要条件，在精确重建的前提下，对低通原型滤波器系数进行了优化。
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| 关 键 词： | 多采样率 滤波器组 精确重建 滤波器 |
A Realization Method of Multirate Filter Banks Satisfying the Perfect Reconstruction Condition |
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| Yang Siying Zhou Zhu Zheng Zhihang. A Realization Method of Multirate Filter Banks Satisfying the Perfect Reconstruction Condition[J]. Journal of Circuits and Systems, 1998, 3(1): 38-43 |
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| Authors: | Yang Siying Zhou Zhu Zheng Zhihang |
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| Abstract: | Multirate filter bands can be realized by cosine modulation of a linear-phase low-pass prototype filter.In this paper,we give a system realization method based on cosine-modulated structure satisfying the perfect reconstruction(PR)condition and deduce the necessary and sufficient condition for its lossless polyphase component matrices.Under the presumption of PR,the coefficients of the low-pass prototype are optimized. |
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| Keywords: | Multirate Filter Bands Multiphase Matrix Pefect Reconstruction |
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