Results 11 to 20 of about 23,128 (265)

Generic quantum Fourier transforms [PDF]

open access: yesACM Transactions on Algorithms, 2006
The quantum Fourier transform (QFT) is a principal ingredient appearing in many efficient quantum algorithms. We present a generic framework for the construction of efficient quantum circuits for the QFT by “quantizing” the highly successful separation of variables technique for the ...
Cristopher Moore   +2 more
openaire   +4 more sources

The generalized fractional fourier transform [PDF]

open access: yes2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2012
A new transform, called the generalized fractional Fourier transform (gFrFT), is proposed. Originally, the eigenfunctions of the fractional Fourier transform (FrFT) are known as the Hermite Gaussian functions (HGFs). Besides, in optics, the HGFs are generalized to be the generalized Hermite Gaussian functions (gHGFs) and their adjoint functions (AgHGFs)
Soo-Chang Pei   +2 more
openaire   +2 more sources

Generalized Fourier-Mukai transforms. [PDF]

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1996
The paper sets out a generalized framework for Fourier-Mukai transforms and illustrates their use via vector bundle transforms. A Fourier-Mukai transform is, roughly, an isomorphism of derived categories of (sheaves) on smooth varieties X and Y. We show that these can only exist if the first Chern class of the varieties vanishes and, in the case of ...
openaire   +2 more sources

The Generalized Fourier Transform: A Unified Framework for the Fourier, Laplace, Mellin and Z Transforms [PDF]

open access: yes, 2021
<div>This paper introduces Generalized Fourier transform (GFT) that is an extension or the generalization of the Fourier transform (FT). The Unilateral Laplace transform (LT) is observed to be the special case of GFT. GFT, as proposed in this work, contributes significantly to the scholarly literature.
Pushpendra Singh   +2 more
openaire   +3 more sources

Quadratic-Phase Hilbert Transform and the Associated Bedrosian Theorem

open access: yesAxioms, 2023
The Hilbert transform is a commonly used linear operator that separates the real and imaginary parts of an analytic signal and is employed in various fields, such as filter design, signal processing, and communication theory.
Hari M. Srivastava   +4 more
doaj   +1 more source

Generalized Mehler Semigroup on White Noise Functionals and White Noise Evolution Equations

open access: yesMathematics, 2020
In this paper, we study a representation of generalized Mehler semigroup in terms of Fourier–Gauss transforms on white noise functionals and then we have an explicit form of the infinitesimal generator of the generalized Mehler semigroup in terms of the ...
Un Cig Ji, Mi Ra Lee, Peng Cheng Ma
doaj   +1 more source

The Continuous Wavelet Transform for a q-Bessel Type Operator

open access: yesInternational Journal of Analysis and Applications, 2022
In this paper, we consider a differential operator on - By accomplishing harmonic analysis tools with respect to the operator we study some definitions and properties of q-Bessel continuous wavelet transform.
C.P. Pandey, Jyoti Saikia
doaj   +1 more source

On the kernel of the $(\kappa,a)$-generalized Fourier transform

open access: yesForum of Mathematics, Sigma, 2022
Comment: 23 ...
Dmitry Gorbachev   +2 more
openaire   +3 more sources

Secure spatial modulation based on two-dimensional generalized weighted fractional Fourier transform encryption

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
In this paper, a two-dimensional generalized weighted fractional Fourier transform (2DGWFRFT) and constellation scrambling (CS)-based secure spatial modulation (SM) scheme, called 2DGWFRFT-CS-SM, is proposed to enhance the physical layer security (PLS ...
Yongxin Huang   +3 more
doaj   +1 more source

A Generalized Uncertainty Principle Involving Fractional Fourier Transform

open access: yesScience and Technology Indonesia
It is well known that the fractional Fourier transform (FrFT) is a non-trivial generalization of the classical Fourier transform. This transform has been extensively utilized in signal analysis and image processing.
Marni Rezki   +2 more
doaj   +1 more source

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