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arXiv 1004.4758cs.ITmath.IT
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基于(P,Q)平移不变系统的有理滤波器组的仿酉多相矩阵设计

A Design of Paraunitary Polyphase Matrices of Rational Filter Banks Based on (P,Q) Shift-Invariant Systems

Sudarshan Shinde

摘要:

本文提出了一种设计临界采样有理滤波器组的仿酉多相矩阵的方法。该方法基于(P,Q)平移不变系统,因此使用该方法可以实现频谱的任何类型的有理分裂。得到了输入谱带到输出谱带映射的P和Q最小的理想(P,Q)移不变系统。得到了一组新的滤波器,它刻画了(P,Q)移不变系统。利用理想$(P,Q)$移不变系统得到了这些滤波器的理想频谱。实际的仿酉多相矩阵,然后通过最小化这些滤波器对参数的仿酉多相矩阵的阻带能量。

英文摘要:

In this paper we present a method to design paraunitary polyphase matrices of critically sampled rational filter banks. The method is based on (P,Q) shift-invariant systems, and so any kind of rational splitting of the frequency spectrum can be achieved using this method. Ideal (P,Q) shift-invariant system with smallest P and Q that map of a band of input spectrum to the output spectrum are obtained. A new set of filters is obtained that characterize a (P,Q) shift-invariant system. Ideal frequency spectrum of these filters are obtained using ideal $(P,Q)$ shift-invariant systems. Actual paraunitary polyphase matrices are then obtained by minimizing the stopband energies of these filters against the parameters of the paraunitary polyphase matrices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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