Presentation 1998/1/23
An Adaptive Allpass-FIR Digital Filter with Low Sensitivity and Reduced Multipliers
James Okello, Yoshio Itoh, Yutaka Fukui, Masaki Kobayashi,
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Abstract(in English) Adaptive infinite impulse response (IIR) digital filter implemented using a cascade of second order direct form allpass filters and a finite impulse response (FIR) filter, has the property of its poles converging to those of the unknown system. In this paper we propose a different way of implementing the adaptive allpass-FIR digital filter using an allpass filter with minimum number of multipliers. We then derive an adaptive algorithm, which does not increase the overall complexity of the adaptive digital filter (ADF). The proposed structure and algorithm exhibit a kind of orthogonality, which ensures convergence of the poles of the ADF to those of the unknown system. Simulation results confirm this convergence.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Allpass Lattice Filter / Residue Theorem / Orthogonality / Adaptive IIR Filter
Paper # SAT97-115
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Conference Date 1998/1/23(1days)
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Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Adaptive Allpass-FIR Digital Filter with Low Sensitivity and Reduced Multipliers
Sub Title (in English)
Keyword(1) Allpass Lattice Filter
Keyword(2) Residue Theorem
Keyword(3) Orthogonality
Keyword(4) Adaptive IIR Filter
1st Author's Name James Okello
1st Author's Affiliation Faculty of Engineering, Tottori University()
2nd Author's Name Yoshio Itoh
2nd Author's Affiliation Faculty of Engineering, Tottori University
3rd Author's Name Yutaka Fukui
3rd Author's Affiliation Faculty of Engineering, Tottori University
4th Author's Name Masaki Kobayashi
4th Author's Affiliation Faculty of Engineering, Ibaraki University
Date 1998/1/23
Paper # SAT97-115
Volume (vol) vol.97
Number (no) 487
Page pp.pp.-
#Pages 6
Date of Issue