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Bias Free Adaptive Notch Filter Based on Fourier Sine Series

Kazuki SHIOGAI, Naoto SASAOKA, Masaki KOBAYASHI, Isao NAKANISHI, James OKELLO, Yoshio ITOH

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Summary :

Conventional adaptive notch filter based on an infinite impulse response (IIR) filter is well known. However, this kind of adaptive notch filter has a problem of stability due to its adaptive IIR filter. In addition, tap coefficients of this notch filter converge to solutions with bias error. In order to solve these problems, an adaptive notch filter using Fourier sine series (ANFF) is proposed. The ANFF is stable because an adaptive IIR filter is not used as an all-pass filter. Further, the proposed adaptive notch filter is robust enough to overcome effects of a disturbance signal, due to a structure of the notch filter based on an exponential filter and line symmetry of auto correlation.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E97-A No.2 pp.557-564
Publication Date
2014/02/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E97.A.557
Type of Manuscript
PAPER
Category
Digital Signal Processing

Authors

Kazuki SHIOGAI
  Tottori University
Naoto SASAOKA
  Tottori University
Masaki KOBAYASHI
  Chubu University
Isao NAKANISHI
  Tottori University
James OKELLO
  NEC Corporation
Yoshio ITOH
  Tottori University

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