Multistage, multirate FIR filter structures for narrow transition-band filters

Author

Ramstad, Tor A. ; Saramäki, Tapio

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1990

fDate

1-3 May 1990

Firstpage

2017

Abstract

An FIR (finite impulse response) filter system which is capable of implementing virtually any practical low-pass and high-pass filter with as little as 50-60 multiplications per sample is presented. The method is based on multirate techniques and complementary filters. The principle and the necessary building blocks are briefly described. Practical design methods for optimization are presented together with design examples and plots of the multiplication rates. Aliasing and finite-wordlength effects are discussed. The resulting system, while having a remarkably low arithmetic complexity, will usually require somewhat more memory than a conventional optimum direct-form filter and a slight increase in the internal signal representations

Keywords

digital filters; high-pass filters; low-pass filters; aliasing effect; complementary filters; design methods; finite impulse response filter system; finite-wordlength effects; high-pass filter; internal signal representations; low pass filter; multiplication rates; multirate FIR filter structures; multistage filter; narrow transition-band filters; optimization; quantisation noise; Arithmetic; Bandwidth; Design methodology; Finite impulse response filter; Frequency; IIR filters; Low pass filters; Narrowband; Optimization methods; Signal representations;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.112143

Filename

112143