Reduction of augmentation order in pipelined realization of IIR filters by cascade/parallel form

Author

Boonyanant, Phakphoom ; Tantaratana, Sawasd

Author_Institution

Dept. of Electr. Eng., Thammasat Univ., Patumthani, Thailand

fYear

1998

fDate

24-27 Nov 1998

Firstpage

77

Lastpage

80

Abstract

In pipelining an IIR filter, a look-ahead transformation is applied to the system transfer function in order to obtain delay units in the feedback loop and consequently create cutsets along the pipeline path. A drawback is that look-ahead transformation increases the number of filter coefficients. In this paper, we investigate order augmentation due to the cluster look-ahead transformation in pipelined direct form IIR filter. We show that the order augmentation can be reduced using cascade form or parallel form

Keywords

IIR filters; cascade networks; circuit feedback; delays; digital filters; pipeline processing; transfer functions; IIR filters; augmentation order; cascade form; cluster look-ahead transformation; cutsets; delay units; direct form IIR filter; feedback loop; filter coefficients; look-ahead transformation; parallel form; pipeline path; pipelined realization; system transfer function; Clustering algorithms; Delay; Digital filters; Electronic mail; Feedback loop; Hardware; IIR filters; Pipeline processing; Time domain analysis; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1998. IEEE APCCAS 1998. The 1998 IEEE Asia-Pacific Conference on

Conference_Location

Chiangmai

Print_ISBN

0-7803-5146-0

Type

conf

DOI

10.1109/APCCAS.1998.743662

Filename

743662