Realization of high accuracy 2-D variable IIR digital filters based on the reduced-dimensional decomposition form

Hyuk Jae Jang, Masayuki Kawamata

Research output: Contribution to journalConference articlepeer-review

Abstract

This paper proposes a realization method of high accuracy 2-D variable IIR digital filters with real coefficients. The proposed method uses the reduced-dimensional decomposition form as a prototype structure of 2-D variable digital filters to suppress the degradation of tuning accuracy due to the linear approximation of variable coefficients. Furthermore, the 1-D subfilters of the prototype filter are realized as cascade connections of low sensitivity second-order variable sections to suppress the degradation of tuning accuracy due to finite coefficient wordlength. Numerical examples show that the proposed 2-D variable digital filter has high frequency tuning accuracy under finite coefficient wordlength and the linear approximation.

Original languageEnglish
Pages (from-to)IV480-IV483
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume4
Publication statusPublished - 2003 Jul 14
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: 2003 May 252003 May 28

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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