Pipelining of cordic based IIR digital filters

Author

Ma, J.P. ; Parhi, Keshab ; Deprettere, E.F.

Author_Institution

Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA

Volume

1

fYear

1997

fDate

21-24 April 1997

Firstpage

643

Abstract

Cordic based IIR digital filters possess desirable properties for VLSI implementation such as local connection, regularity, and good finite word-length behavior, but can´t be pipelined to finer levels (such as bit or multi-bit levels) due to the presence of feedback loops. In this paper, a pipelining method for the cordic based IIR digital filters is proposed using the constrained filter design methods and the polyphase decomposition technique. Using this method, the filter sample rate can be increased to any desired level.

Keywords

VLSI; digital arithmetic; digital filters; feedback; lattice filters; Cordic based IIR digital filters; VLSI implementation; constrained filter design methods; feedback loops; finite word-length behavior; local connection; pipelining; polyphase decomposition; regularity; Band pass filters; Design methodology; Digital filters; Electronic mail; Feedback loop; IIR filters; Lattices; Pipeline processing; Signal processing algorithms; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.599850

Filename

599850