The forward digital lattice structure for the synthesis of IIR digital filters

Author

Nie, Xiaoning ; Unbehauen, Rolf

Author_Institution

Alcatel SEL, Stuttgart, Germany

Volume

41

Issue

11

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

765

Lastpage

768

Abstract

In this correspondence, the forward digital lattice structure (FDLS) is investigated for the realization of digital IIR filters. The FDLS can particularly be applied to stable digital recursive filters with complex coefficients. The FDLS shows the localized feedback property and is suitable for modular and concurrent implementations. Furthermore, the FDLS is well suited for the realization of variable bandwidth filters obtained after all-pass transformations. The analysis of finite word length effects shows the attractive properties of the FDLS if the respective all-pass building blocks are implemented in an efficient manner

Keywords

IIR filters; feedback; filtering theory; network synthesis; recursive filters; IIR digital filters; all-pass transformations; complex coefficients; concurrent implementations; filter synthesis; finite word length effects; forward digital lattice structure; localized feedback property; modular implementations; stable digital recursive filters; variable bandwidth filters; Application software; Band pass filters; Bandwidth; Circuits; Digital filters; Feedback; Hardware; IIR filters; Lattices; Transfer functions;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.331548

Filename

331548