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Filter structures composed of all-pass and FIR filters for interpolation and decimation by a factor of two
Linköping University, Department of Electrical Engineering.
Linköping University, The Institute of Technology. Linköping University, Department of Electrical Engineering, Electronics System.
1999 (English)In: IEEE transactions on circuits and systems. 2, Analog and digital signal processing (Print), ISSN 1057-7130, E-ISSN 1558-125X, Vol. 46, no 7, 896-905 p.Article in journal (Refereed) Published
Abstract [en]

This paper introduces filter structures for interpolation and decimation by a factor of two. The structures are derived by using the frequency-response masking approach, in which the overall filter makes use of a periodic model filter, its complementary filter, and two masking filters. The periodic model filters are obtained by replacing each delay element in a model filter with M delay elements in cascade. The model filter is a half-band infinite-impulse response (IIR) filter composed of two all-pass filters in parallel, whereas the masking filters are linear-phase finite-impulse response (FIR) filters. In the final interpolator and decimator structures the filtering takes plate at the lowest of the two sampling rates involved. The corresponding overall filter can be designed by separately optimizing a half-band IIR filter and a linear-phase FIR filter. Both nonlinear-phase and approximately linear-phase filters are considered. One advantage of the proposed filter structures over conventional half-band IIR filter structures is that their maximal sample frequency is M times higher, which may be utilized to increase the speed in an implementation and/or to reduce the power consumption via power supply voltage scaling techniques. In the case of approximately linear-phase filters, the computational complexity can be reduced as well. Several design examples are included demonstrating the properties and advantages of the proposed filter structures

Place, publisher, year, edition, pages
1999. Vol. 46, no 7, 896-905 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-34464Local ID: 21502OAI: oai:DiVA.org:liu-34464DiVA: diva2:255312
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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http://ieeexplore.ieee.org/iel5/82/16843/00775385.pdf?tp=&arnumber=775385&isnumber=16843

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Johansson, HåkanWanhammar, Lars

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Johansson, HåkanWanhammar, Lars
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IEEE transactions on circuits and systems. 2, Analog and digital signal processing (Print)
Engineering and Technology

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  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
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  • sv-SE
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Output format
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