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A new structure and design method for variable fractional-delay 2-D FIR digital filters

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Abstract

In this paper, a new structure and design method are proposed for variable fractional-delay (VFD) 2-D FIR digital filters. Basing on the Taylor series expansion of the desired frequency response, a prefilter–subfilter cascaded structure can be derived. For the 1-D differentiating prefilters and the 2-D quadrantally symmetric subfilters, they can be designed simply by the least-squares method. Design examples show that the required number of independent coefficients of the proposed system is much less than that of the existing structure while the performance of the designed VFD 2-D filters is still better under the cost of larger delays.

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Authors and Affiliations

  1. Department of Electrical Engineering, National University of Kaohsiung, No. 700, Kaohsiung University Rd., Nan-Tzu District, Kaohsiung, 811, Taiwan, ROC

    Jong-Jy Shyu & Yu-Shiang Chen

  2. Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan, ROC

    Soo-Chang Pei & Yun-Da Huang

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  1. Jong-Jy Shyu
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  2. Soo-Chang Pei
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  3. Yun-Da Huang
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  4. Yu-Shiang Chen
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Correspondence to Jong-Jy Shyu.

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Shyu, JJ., Pei, SC., Huang, YD. et al. A new structure and design method for variable fractional-delay 2-D FIR digital filters. Multidim Syst Sign Process 25, 511–529 (2014). https://doi.org/10.1007/s11045-012-0215-2

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  • DOI: https://doi.org/10.1007/s11045-012-0215-2

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