An adaptive notch filter for eliminating multiple sinusoids with reduced bias

Author

Okello, James ; Arita, Shin Ichi ; Itoh, Yoshio ; Fukui, Yutaka ; Kobayashi, Masaki

Author_Institution

Fac. of Eng., Tottori Univ., Japan

Volume

3

fYear

2000

fDate

2000

Firstpage

551

Abstract

In this paper we propose a new algorithm for an adaptive notch filter implemented using an allpass filter, for elimination of multiple sinusoids. The notch filter is implemented using cascades of second order notch filters, each of which has been realized using a second order direct form allpass filter. We also present an analysis which indicates that the proposed algorithm has a reduced bias in the estimation of the input sinusoids. Simulation results that have been provided confirm this analysis

Keywords

adaptive filters; all-pass filters; digital filters; filtering theory; notch filters; white noise; adaptive notch filter; input sinusoid estimation; multiple sinusoids elimination; reduced bias; second order direct form allpass filter; second order notch filter cascades; Adaptive algorithm; Adaptive filters; Adaptive signal processing; Algorithm design and analysis; Band pass filters; Finite impulse response filter; IIR filters; Lattices; Radar detection; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.856119

Filename

856119