1991•Unpublished venueRequires access

Windowing to simultaneously achieve arbitrary autocorrelation characteristics and probability densities in noise generators

Rakesh Taori, G.D. Cain, K.V. Lever

Abstract

In the design of pseudonoise generators with user-specified characteristics it is possible for the user to inadvertently specify incompatible combinations of probability density function (PDF) and power spectral density. A method is presented which harnesses evolution procedures for optimizing the characteristics of the achieved power spectrum by windowing the corresponding autocorrelation function, given a particular target PDF. It is shown that for a given PDF (truncated Cauchy) it is possible, by appropriately costing spectral negativity infractions, to produce a positive approximation to the specified power spectrum.>

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Key concepts: Autocorrelation, Spectral density, Probability density function, Cauchy distribution, Noise (video), Spectrum (functional analysis), Computer science, Function (biology)