一种降低窄过渡带fir低通滤波器实现复杂度的方法

Method for reducing realization complexity of narrow transition zone FIR low pass filter

Abstract

The invention discloses a method for reducing length of a narrow transition zone FIR low pass filter. Firstly, an FIR low pass filter is designed according to system requirements, each parameter of the FIR low pass filter is determined, an equivalent structure of the FIR low pass filter is designed according to each parameter of the FIR low pass filter, the equivalent structure of the FIR low pass filter is made to satisfy performance of the FIR low pass filter, width of the transition zone is reduced, and the equivalent structure of the FIR low pass filter has fewer filter coefficients and has advantages of simple realization and saved resource cost.
本发明公开了一种降低窄过渡带带宽FIR低通滤波器长度的方法,首先通过系统需求设计一FIR低通滤波器并确定FIR低通滤波器的各个参数,再根据FIR低通滤波器的各个参数设计一FIR低通滤波器的等效结构,使设计的FIR低通滤波器的等效结构满足FIR低通滤波器的性能并降低过渡带带宽,但FIR低通滤波器的等效结构具有较少的滤波器系数,同时具有实现简单和节约资源成本的特点。

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Cited By (1)

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    CN-105811920-AJuly 27, 2016哈尔滨工程大学FRM narrow-transition band filter bank structure