Journal of information and communication convergence engineering

  • 제1권4호
  • /
  • Pages.189-193
  • /
  • 2003
  • /
  • 2234-8255(pISSN)
  • /
  • 2234-8883(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
권호 표지

A Fast Algorithm for Real-time Adaptive Notch Filtering

  • Kim, Haeng-Gihl (Dept. of Electronic Communication Eng., Yosu University)
  • 발행 : 2003.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A new algorithm is presented for adaptive notch filtering of narrow band or sine signals for embedded among broad band noise. The notch filter is implemented as a constrained infinite impulse response filter with a minimal number of parameters, Based on the recursive prediction error (RPE) method, the algorithm has the advantages of the fast convergence, accurate results and initial estimate of filter coefficient and its covariance is revealed. A convergence criterion is also developed. By using the information of the noise-to-signal power, the algorithm can self-adjust its initial filter coefficient estimate and its covariance to ensure convergence.

키워드

참고문헌

  1. Arye Nehorai, 'A minimal parameter adaptive notch filter with constrained poles and zeros,' IEEE Trans. Acoust., Sppch, Signal Processing, vol. ASSP-33, no. 4 Aug. 1985
  2. L. Ljung 'Analysis of a general recursive prediction error identification algorithm,' Automatica, vol. 17, no. 1, Jan. 1981, pp. 89-100 https://doi.org/10.1016/0005-1098(81)90086-8
  3. P. A. Thompson, 'A constrained recursive adaptive filter for enhancement of narrow-band signals in white noise.' Proc. $12^{th}$ Asilomar Conf. Circuit and systems, Pacific Grove, CA, Nov. 1978, pp. 214-218
  4. Yashwant V. Joshi and S. C. Dutta Roy, 'Design of IIR Multiple Notch Filters Based on All-Pass Filters,' IEEE Trans. Circuit and systems-II, vol. 46, no. 2, Feb. 1999
  5. L. Ljung and T. Soderstron, Theory and Practice of Recursive Identification. Cambridge, MA, MIT Press, 1983