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A realization of FIR filters with simultaneously variable bandwidth and fractional delay
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.
2012 (English)In: Signal Processing Conference (EUSIPCO), 2012, IEEE , 2012, 2178-2182 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper introduces a realization of finite-length impulse response (FIR) filters with simultaneously variable bandwidth and fractional delay (FD). The realization makes use of impulse responses which are two-dimensional polynomials in the bandwidth and FD parameters. Unlike previous polynomial-based realizations, it utilizes the fact that a variable FD filter is typically much less complex than a variable-bandwidth filter. By separating the corresponding subfilters in the overall realization, significant savings are thereby achieved. A design example, included in the paper, shows about 65 percent multiplication and addition savings compared to the previous polynomial-based realizations. Moreover, compared to a recently introduced alternative fast filter bank approach, the proposed method offers significantly smaller group delays and group delay errors.

Place, publisher, year, edition, pages
IEEE , 2012. 2178-2182 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-87991ISI: 000310623800438ISBN: 978-1-4673-1068-0 (print)OAI: oai:DiVA.org:liu-87991DiVA: diva2:600988
Conference
20th European Signal Processing Conference (EUSIPCO 2012), 27-31 August 2012, Bucharest, Romania
Available from: 2013-01-28 Created: 2013-01-28 Last updated: 2013-02-11

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Johansson, HåkanEghbali, Amir

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Citation style
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  • harvard1
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  • vancouver
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  • Other style
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  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf