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2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698) (2003)
Baltimore, MD, USA
July 6, 2003 to July 9, 2003
ISBN: 0-7803-7965-9
pp: 825-828
Xiaojuan Hu , Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
L.S. DeBrunner , Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
V. DeBrunner , Sch. of Electr. & Comput. Eng., Oklahoma Univ., Norman, OK, USA
ABSTRACT
We propose a method for designing a filter to meet a set of specifications, which can be implemented with reduced area. Our approach combines a prefilter implementation structure whose function has been developed over the years with our previously reported variable precision technique for intelligently quantizing the filter coefficients. Our area-efficient structure uses frequency masking with a single filter model to give good performance with low order and low coefficient sensitivity. Our method does use a novel connection of a simple prefilter structure used in a frequency masking technique to give good designs for the previously unattainable wide-band filter designs. The technique also gives designs with superior (very sharp) transition regions. Both types produce filters that efficiently use digital circuitry, leading to space-efficient designs that are significantly smaller than would otherwise be the case. Some examples are given to demonstrate the effectiveness of our design.
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CITATION

L. DeBrunner, V. DeBrunner and X. Hu, "Design of space-efficient, wide- and narrow transition-band, FIR filters," 2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)(ICME), Baltimore, MD, USA, 2003, pp. 825-828.
doi:10.1109/ICME.2003.1221744
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