An IIR ALE based on constrained FIR filter

Author

Okello, James ; Ueda, Kenji ; Itoh, Yoshio ; Ochi, Hiroshi

Author_Institution

Fac. of Inf. Eng., Kyushu Inst. of Technol., Fukuoka, Japan

Volume

1

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

281

Abstract

In this paper, we propose an adaptive algorithm for an adaptive line enhancer (ALE). The two constraints that are considered are the unit norm constraint and zeros constraint. By incorporating these two constrains, we show that the effect of a white disturbance signal on the convergence of the ALE is eliminated in the mean sense. Furthermore, by introducing a control mechanism, the stability and convergence of the system is guaranteed even if there is a sudden change in the frequency of the input sinusoidal signal. Simulation results that are presented verify these properties.

Keywords

FIR filters; IIR filters; adaptive filters; numerical stability; poles and zeros; ALE; IIR filter; adaptive algorithm; adaptive line enhancer; constrained FIR filter; control mechanism; convergence; stability; unit norm constraint; white disturbance signal; zeros constraint; Adaptive filters; Band pass filters; Convergence; Digital signal processing; Filtering theory; Finite impulse response filter; Frequency shift keying; IIR filters; Line enhancers; Narrowband;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1181045

Filename

1181045