Methods for fractional delay approximation

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Abstract

Fractional delay filters have been common devices in many digital systems. They are used for implementing discrete-time systems which include delays that are not multiples of the sampling period. In this paper ideal fractional delay transfer function is approximated using some generalization of Taylor expansion known as Hummel-Seebeck-Obreshkov (HSO) expansion. When HSO is applied to fractional delay it leads to rational approximation that is equivalent to Pade approximation. Numerical results show that the proposed approximations are efficient.

Original languageEnglish (US)
Title of host publication2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014 - Conference Proceedings
PublisherIEEE Computer Society
ISBN (Print)9781479925070
DOIs
StatePublished - Jan 1 2014
Event2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014 - Santiago, Chile
Duration: Feb 25 2014Feb 28 2014

Publication series

Name2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014 - Conference Proceedings

Other

Other2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014
CountryChile
CitySantiago
Period2/25/142/28/14

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Hasan, M. A. (2014). Methods for fractional delay approximation. In 2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014 - Conference Proceedings [6820307] (2014 IEEE 5th Latin American Symposium on Circuits and Systems, LASCAS 2014 - Conference Proceedings). IEEE Computer Society. https://doi.org/10.1109/LASCAS.2014.6820307