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On the design of adjustable fractional delay FIR filters using digital differentiators
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
Tampere University of Technology.
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, The Institute of Technology.
2010 (English)In: Proc. IEEE Int. Conf. Green Circuits Syst., IEEE , 2010, 289-292 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper proposes a systematic method to design adjustable fractional delay (FD) filters using the Farrow structure. The Farrow structure has even-order subfilters and the maximum magnitude approximation error determines the number of these subfilters. In the Farrow structure, different powers of the FD value are multiplied by the subfilters. As both the FD value and its powers are smaller than unity, they are considered as weighting functions. The approximation error for each subfilter can then increase in proportion to the power of the FD value. With the proposed design method, the first Farrow subfilter is a pure delay whereas the remaining subfilters are digital differentiators. Examples illustrate the proposed design method and comparison to some earlier designs shows an average reduction of 20% in arithmetic complexity.

Place, publisher, year, edition, pages
IEEE , 2010. 289-292 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-65582DOI: 10.1109/ICGCS.2010.5543052ISBN: 978-1-4244-6876-8 (print)ISBN: 978-1-4244-6877-5 (print)OAI: oai:DiVA.org:liu-65582DiVA: diva2:397036
Conference
Green Circuits and Systems (ICGCS), 2010 International Conference on
Available from: 2011-02-11 Created: 2011-02-11 Last updated: 2013-11-26

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Eghbali, AmirJohansson, HåkanLöwenborg, Per

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • asciidoc
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