An adaptive IIR structure for the separation, enhancement, and tracking of multiple sinusoids

Author

Ko, C.C. ; Li, C.P.

Author_Institution

Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

Volume

42

Issue

10

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

2832

Lastpage

2834

Abstract

A new IIR adaptive algorithm for separating, enhancing and tracking multiple sinusoids is investigated. In this algorithm, up to M complex sinusoids are individually tracked by passing the input into a Mth order IIR notch filter and then into a parallel bank of M first-order all-pole filters whose poles are equal to the zeros of the notch filter. The advantages of the algorithm are O(M) implementation complexity, separation of the sinusoids, one asymptotic time constant and inherent stability with poles constrained to be inside the unit circle

Keywords

adaptive filters; computational complexity; digital filters; filtering and prediction theory; notch filters; poles and zeros; signal processing; tracking; IIR adaptive algorithm; Mth order IIR notch filter; adaptive IIR structure; asymptotic time constant; complex sinusoids; enhancement; first-order all-pole filters; implementation complexity; inherent stability; multiple sinusoids; parallel bank; separation; tracking; unit circle; zeros; Adaptive algorithm; Adaptive filters; Filter bank; Frequency estimation; IIR filters; Poles and zeros; Radar tracking; Stability; Transfer functions; White noise;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.324747

Filename

324747