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Polyphase Decomposition of Digital Fractional-Delay Filters
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
San Diego State University, CA 92182 USA.
2015 (English)In: IEEE Signal Processing Letters, ISSN 1070-9908, E-ISSN 1558-2361, Vol. 22, no 8, 1021-1025 p.Article in journal (Refereed) Published
Abstract [en]

This letter shows that, for arbitrary M-fold polyphase decompositions, the polyphase components of digital fractional-delay (FD) filters correspond to FD filters as well, but with different delays and gains. For even values of, the components also have additional and different phase offsets. The letter also discusses the application of these results to the optimization of high-order filters with few unknowns.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2015. Vol. 22, no 8, 1021-1025 p.
Keyword [en]
FIR filters; fractional-delay filters; high-order filters; polyphase decomposition
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-113713DOI: 10.1109/LSP.2014.2381603ISI: 000347003400003OAI: oai:DiVA.org:liu-113713DiVA: diva2:784677
Available from: 2015-01-30 Created: 2015-01-29 Last updated: 2017-12-05

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Johansson, Håkan

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