New nonlinear adaptive IIR digital filters

Author

Li, Qiu Ping ; Kwan, Hon Keung

Author_Institution

Dept. of Electr. Eng., Windsor Univ., Ont., Canada

fYear

1993

fDate

16-18 Aug 1993

Firstpage

134

Abstract

A new structure and its adaptive algorithm of a nonlinear adaptive IIR digital filter is presented. With the use of a nonlinear saturation function at the output, the stability problem adherent to conventional linear adaptive IIR digital filters can be avoided. The individual parameter adaptation scheme is developed into the adaptive algorithm to optimally adjust each parameter at every iteration. Based on the application in adaptive system identifications of linear IIR digital filters, simulation results obtained show that the new nonlinear adaptive IIR digital filters outperform those of linear adaptive IIR digital filters in terms of convergence speed and final output error residuals

Keywords

IIR filters; circuit stability; convergence; digital filters; filtering theory; identification; nonlinear filters; IIR digital filters; adaptive algorithm; adaptive system identifications; convergence speed; individual parameter adaptation scheme; nonlinear adaptive; nonlinear saturation function; stability; Adaptive filters; Adaptive systems; Computational complexity; Convergence; Difference equations; Digital filters; Finite impulse response filter; IIR filters; Nonlinear filters; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on

Conference_Location

Detroit, MI

Print_ISBN

0-7803-1760-2

Type

conf

DOI

10.1109/MWSCAS.1993.343047

Filename

343047