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arxiv: 1208.6493 · v2 · pith:RIATF7WTnew · submitted 2012-08-31 · 🧮 math.FA · cs.IT· math.IT

Shannon's sampling theorem in a distributional setting

classification 🧮 math.FA cs.ITmath.IT
keywords containedsamplingshannonsupporttheoremarticleassumptionclassical
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The classical Shannon sampling theorem states that a signal f with Fourier transform F in L^2(R) having its support contained in (-\pi,\pi) can be recovered from the sequence of samples (f(n))_{n in Z} via f(t)=\sum_{n in Z} f(n) (sin(\pi (t -n)))/(\pi (t-n)) (t in R). In this article we prove a generalization of this result under the assumption that F is a compactly supported distribution with its support contained in (-\pi,\pi).

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