Walsh transform

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• Walsh — may refer to: People Main|Walsh (surname)name origin, and people with the name Mathematics * Walsh matrix, an orthogonal matrix with several useful properties * Walsh transform, a linear transform based on the Walsh matrix Places * Walsh, Ontario …   Wikipedia

• Walsh matrix — In mathematics, a Walsh matrix is a specific square matrix, with dimensions a power of 2, the entries of which are +1 or 1, and the property that the dot product of any two distinct rows (or columns) is zero. The Walsh matrix was proposed by… …   Wikipedia

• Walsh function — In mathematical analysis, the set of Walsh functions form an orthogonal basis of the square integrable functions on the unit interval. The functions take the values 1 and 1 only, on sub intervals defined by dyadic fractions. They are useful in… …   Wikipedia

• Hadamard transform — The Hadamard transform (also known as the Walsh Hadamard transform, Hadamard Rademacher Walsh transform, Walsh transform, or Walsh Fourier transform) is an example of a generalized class of Fourier transforms. It is named for the French… …   Wikipedia

• Fast Walsh–Hadamard transform — In computational mathematics, the Hadamard ordered fast Walsh–Hadamard transform (FWHTh) is an efficient algorithm to compute the Walsh–Hadamard transform (WHT). A naive implementation of the WHT would have a computational complexity of O(N^2).… …   Wikipedia

• Transformee de Walsh — Transformée de Walsh En mathématiques, et plus précisément en analyse harmonique la transformée de Walsh est l analogue de la Transformée de Fourier discrète. Elle opère sur un corps fini de l arithmétique modulaire à la place des nombres… …   Wikipédia en Français

• Transformée de walsh — En mathématiques, et plus précisément en analyse harmonique la transformée de Walsh est l analogue de la Transformée de Fourier discrète. Elle opère sur un corps fini de l arithmétique modulaire à la place des nombres complexes. Elle est utilisée …   Wikipédia en Français

• Transformation de Hadamard-Walsh — Transformée de Hadamard La transformée d´Hadamard (aussi connue sous le nom de « transformée de Walsh Hadamard ») est un exemple d une classe généralisée d une transformée de Fourier. Elle est nommée d après le mathématicien français… …   Wikipédia en Français

• Bent function — The 2 ary bent functions with Hamming weight 1 Their nonlinearity is …   Wikipedia

• Rayleigh fading — is a statistical model for the effect of a propagation environment on a radio signal, such as that used by wireless devices.Rayleigh fading models assume that the magnitude of a signal that has passed through such a transmission medium (also… …   Wikipedia

• Scientific phenomena named after people — This is a list of scientific phenomena and concepts named after people (eponymous phenomena). For other lists of eponyms, see eponym. NOTOC A* Abderhalden ninhydrin reaction Emil Abderhalden * Abney effect, Abney s law of additivity William de… …   Wikipedia