Cited by 51Digital Filter Design and ImplementationAnalog and Mixed-Signal Circuit DesignAdvanced Control Systems Design

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Results on Maximally Flat Fractional-Delay Systems

Samadi, S., Ahmad, M.O., Swamy, M.N.S.·2004·IEEE Transactions on Circuits and Systems I: Regular Papers

Abstract

The two classes of maximally flat finite-impulse response (FIR) and all-pass infinite-impulse response (IIR) fractional-sample delay systems are thoroughly studied. New expressions for the transfer functions are derived and mathematical properties revealed. Our contributions to the FIR case include a closed-form formula for the Farrow structure, a three-term recurrence relation based on the interpolation algorithm of Neville, a concise operator-based formula using the forward shift operator, and a continued fraction representation. Three types of structures are developed based on these formulas. Our formula for the Farrow structure enhances the existing contributions by Valimaki, and by Vesma and Sarama/spl uml/ki on the subsystems of the structure. For the IIR case, it is rigorously proved, using the theory of Pade approximants, that the continued fraction formulation of Tassart and Depalle yields all-pass fractional delay systems. It is also proved that the maximally flat all-pass fractional-delay systems are closely related to the Lagrange interpolation. It is shown that these IIR systems can be characterized using Thiele's rational interpolation algorithm. A new formula for the transfer function is derived based on the Thiele continued fractions. Finally, a new class of maximally flat FIR fractional-sample delay systems that exhibit an almost all-pass magnitude response is proposed. The systems possess a maximally flat group-delay response at the end frequencies 0 and /spl pi/, and are characterized by a closed-form formula. Their main advantage over the classical FIR Lagrange interpolators is the improved magnitude response characteristics.

Overview

Integrity signals

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Crossref · 10.1109/tcsi.2004.836848

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37 of 37 references verified0 citation errors · 0 not checkable

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Citations

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Research works printed but not linked: 4

  1. Neville, 1934, Iterative interpolation, J. Indian Math. Soc., 20, 87
  2. de Lagrange, Sur l’usage des fractions continues dans le calcul intégral, Oeuvres, 4, 301
  3. Gauss, Disquisitiones generales circa seriem infinitam $1 + ({{\alpha\beta }/{ 1\cdot\gamma }})x + ({{\alpha (\alpha +1)\beta (\beta +1) }/{ 1\cdot 2\cdot\gamma (\gamma +1)}}) x x + ({{\alpha (\alpha\!+\!1)(\alpha\!+\!2)\beta (\beta\!+\!1) (\beta\!+\!2)}/{ 1\!\cdot\! 2\!\cdot\! 3\!\cdot\!\gamma (\gamma\!+\!1)(\gamma\!+\!2)}}) x^{3}\!+$ etc., Gauss Werke, 3, 134
  4. 10.1090/S0025-5718-1986-0842132-0 · DOI

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Metadata

Authors
Samadi, S., Ahmad, M. O., & Swamy, M. N. S.
Affiliations
Concordia University (CA)
Venue
IEEE Transactions on Circuits and Systems I: Regular Papers
Published
2004-11
Volume
51
Issue
11
Pages
2271-2286
ISSN
1057-7122 (ISSN-L)
OpenAlex
W2161486443
Cited by
51
References
37
Citations by year
2020: 1 · 2019: 4 · 2017: 4 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 5 · 2012: 3
FWCI
6.80
Type
journal article
Language
en
Open access
closed
Locations
IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications (publishedVersion)
Topics
  • Physical Sciences › Computer Science › Signal Processing › Digital Filter Design and Implementation
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Analog and Mixed-Signal Circuit Design
  • Physical Sciences › Engineering › Control and Systems Engineering › Advanced Control Systems Design
Keywords
maximally flat filters, FIR filters, all-pass filter, Farrow structure, Padé approximants, Lagrange interpolation, group delay, magnitude response, transfer function

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