Fast design of optimal comb FIR filters

被引：0
|
作者：
Zahradnik, P
Vlcek, M
机构：
[1] Czech Tech Univ, Dept Telecommun Engn, CZ-16627 Prague, Czech Republic
[2] Czech Tech Univ, Dept Appl Math, CZ-11000 Prague, Czech Republic
来源：
KNOWLEDGE-BASED INTELLIGENT INFORMATION AND ENGINEERING SYSTEMS, PT 3, PROCEEDINGS | 2004年 / 3215卷
关键词：
FIR; comb filter; narrow band; optimal filter; equiripple approximation; analytical design; recursive algorithm;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A novel fast analytical design method for highly selective digital optimal equiripple comb FIR filters is presented. The equiripple comb FIR filters are optimal in the Chebyshev sense. The number of notch bands, the width of the notch bands and the attenuation in the passbands can be independently specified. The degree formula and the differential equation for the generating polynomial of the filter is presented. Based on the differential equation, a fast simple algebraic recursive procedure for the evaluation of the impulse response of the filter is introduced. Its arithmetic robustness outperforms by far the known analytical design method. Highly selective equiripple comb FIR filters with thousands of coefficients can be designed. One example demonstrates the efficiency of the filter design.
引用
收藏
页码：733 / 739
页数：7
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