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Modified short-time Fourier transform
Optical Engineering, 1995The short-time Fourier transform (STFT) is a typical time-frequency 2-D analysis method for nonstationary signals. Its applications in engineering are limited because of its fixed window, which results in low time-frequency resolution. To surmount this disadvantage, a modified short-time Fourier transform (MSTFT) is proposed.
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Learning to short-time Fourier transform in spectrum sensing
Physical Communication, 2017The future wireless communication will come up with a strict requirement on high spectral efficiency, developing novel algorithms for spectrum sensing with deep sensing capability will be more challenging. However, traditional expert feature-based spectrum sensing algorithms are lack of sufficient capability of self-learning and adaptability to unknown
Longmei Zhou +2 more
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Principal components analysis of the short-time Fourier transform
[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991The authors introduce a novel time-frequency representation, the principal short-time Fourier transform (PSTFT), as a reduced-data characterization of the nonstationary spectral content of a sequence. To form the PSTFT, the authors apply principal components analysis to STFT frequency slices and retain only the first principal component information ...
Daniel M. Beyerbach, Hamid Nawab
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Hardy's Theorem and the Short-Time Fourier Transform of Schwartz Functions
Journal of the London Mathematical Society, 2001Whereas \textit{G.~Folland} [``Harmonic analysis in phase space'' (Princeton Univ. Press) (1989; Zbl 0682.43001), p.~31, (1.42), Prop.] and \textit{M.~W. Wong} [``Weyl transforms'' (Springer, New York) (1998; Zbl 0908.44002), p.~10, Prop. 2.3] define a sesquilinear Fourier-Wigner transform by \(V:{\mathcal {S}}(\mathbb R^n)\times{\mathcal {S}} (\mathbb
Gröchenig, Karlheinz, Zimmermann, Georg
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Short time biquaternion quadratic phase Fourier transform
Journal of the Franklin InstitutezbMATH Open Web Interface contents unavailable due to conflicting licenses.
Owais Ahmad, Aijaz Ahmad Dar
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Optimal short-time fourier transform for monocomponent signals
Proceedings of the IEEE 12th Signal Processing and Communications Applications Conference, 2004., 2004New methods of improving the short-time Fourier transform representation of signals have recently emerged. These methods use linear canonical transforms to bring the signal into a minimal time-bandwidth product form. Here we show that linear canonical transforms are not sufficient to achieve the minimum time-bandwidth product for high-order modulated ...
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