Heisenberg uncertainty inequality for Gabor transform (Q2830091)

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scientific article; zbMATH DE number 6649793
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Heisenberg uncertainty inequality for Gabor transform
scientific article; zbMATH DE number 6649793

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    Heisenberg uncertainty inequality for Gabor transform (English)
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    9 November 2016
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    Heisenberg uncertainty inequality
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    Fourier transform
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    Gabor transform
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    Heisenberg group
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    nilpotent Lie group
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    Plancherel formula
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    The classical Heisenberg uncertainty inequality states that a non-zero function and its Fourier transform cannot both be sharply localized. There is a respective inequality if the Fourier transform is replaced by the Gabor transform -- also known as the windowed Fourier transform. The authors prove a Heisenberg-type inequality for the Fourier transform on non-commutative groups of the form \(K\ltimes \mathbb R^n\), where \(K\) is a compact subgroup of the group of automorphisms of \(\mathbb R^n\). This implies further the inequality for the Gabor transform (defined in [\textit{A. G. Farashahi} and \textit{R. Kamyabi-Gol}, Bull. Belg. Math. Soc. - Simon Stevin 19, No. 4, 683--701 (2012; Zbl 1268.43002)]) for several classes of groups of the form \(K\ltimes \mathbb R^n\).
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