Title
Algebraic signal sampling, Gibbs phenomenon and Prony-type systems.
Abstract
Systems of Prony type appear in various signal reconstruction problems such as finite rate of innovation, superresolution and Fourier inversion of piecewise smooth functions. We propose a novel approach for solving Prony-type systems, which requires sampling the signal at arithmetic progressions. By keeping the number of equations small and fixed, we demonstrate that such "decimation" can lead to practical improvements in the reconstruction accuracy. As an application, we provide a solution to the so-called Eckhoff's conjecture, which asked for reconstructing jump positions and magnitudes of a piecewise-smooth function from its Fourier coefficients with maximal possible asymptotic accuracy -- thus eliminating the Gibbs phenomenon.
Year
Venue
Field
2013
CoRR
Gibbs phenomenon,Mathematical optimization,Decimation,Algebraic number,Mathematical analysis,Algorithm,Fourier transform,Fourier series,Sampling (statistics),Signal reconstruction,Mathematics,Piecewise
DocType
Volume
Citations 
Journal
abs/1306.1097
0
PageRank 
References 
Authors
0.34
7
2
Name
Order
Citations
PageRank
Dmitry Batenkov1257.19
yosef yomdin2183.22