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IEICE TRANSACTIONS on Fundamentals

Resolution of the Gibbs Phenomenon for Fractional Fourier Series

Hongqing ZHU, Meiyu DING, Daqi GAO

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Summary :

The nth partial sums of a classical Fourier series have large oscillations near the jump discontinuities. This behaviour is the well-known Gibbs phenomenon. Recently, the inverse polynomial reconstruction method (IPRM) has been successfully implemented to reconstruct piecewise smooth functions by reducing the effects of the Gibbs phenomenon for Fourier series. This paper addresses the 2-D fractional Fourier series (FrFS) using the same approach used with the 1-D fractional Fourier series and finds that the Gibbs phenomenon will be observed in 1-D and 2-D fractional Fourier series expansions for functions at a jump discontinuity. The existing IPRM for resolution of the Gibbs phenomenon for 1-D and 2-D FrFS appears to be the same as that used for Fourier series. The proof of convergence provides theoretical basis for both 1-D and 2-D IPRM to remove Gibbs phenomenon. Several numerical examples are investigated. The results indicate that the IPRM method completely eliminates the Gibbs phenomenon and gives exact reconstruction results.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E97-A No.2 pp.572-586
Publication Date
2014/02/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E97.A.572
Type of Manuscript
PAPER
Category
Digital Signal Processing

Authors

Hongqing ZHU
  East China University of Science and Technology
Meiyu DING
  East China University of Science and Technology
Daqi GAO
  East China University of Science and Technology

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