Correct formulation of gradient characteristics for adaptive notch filters based on monotonically increasing gradient algorithm

Shunsuke Koshita, Hiroyuki Munakata, Masahide Abe, Masayuki Kawamata

Research output: Contribution to journalArticlepeer-review

Abstract

In the field of adaptive notch filtering, Monotonically Increasing Gradient (MIG) algorithm has recently been proposed by Sugiura and Shimamura [1], where it is claimed that the MIG algorithm shows monotonically increasing gradient characteristics. However, our analysis has found that the underlying theory in [1] includes crucial errors. This letter shows that the formulation of the gradient characteristics in [1] is incorrect, and reveals that the MIG algorithm fails to realize monotonically increasing gradient characteristics when the input signal includes white noise.

Original languageEnglish
Pages (from-to)1557-1561
Number of pages5
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE100A
Issue number7
DOIs
Publication statusPublished - 2017 Jul

Keywords

  • Adaptive notch filter
  • Gradient characteristic
  • MIG algorithm
  • Monotonically increasing

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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