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 language | English |
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Pages (from-to) | IV480-IV483 |
Journal | Proceedings - IEEE International Symposium on Circuits and Systems |
Volume | 4 |
Publication status | Published - 2003 Jul 14 |
Event | Proceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand Duration: 2003 May 25 → 2003 May 28 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering