Title :
Windowing to simultaneously achieve arbitrary autocorrelation characteristics and probability densities in noise generators
Author :
Taori, R. ; Cain, G.D. ; Lever, K.V.
Author_Institution :
Sch. of Electron. & Manuf. Syst. Eng., Polytech. of Central London, UK
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
Keywords :
correlation methods; network synthesis; noise generators; optimisation; probability; signal processing; Darwinian window; autocorrelation characteristics; noise generators; optimisation; positive approximation; power spectral density; power spectrum; probability densities; pseudonoise generators; spectral negativity infractions; truncated Cauchy; Autocorrelation; Character generation; Design engineering; Filters; Iterative methods; Manufacturing systems; Noise generators; Power generation; Probability density function; Systems engineering and theory;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176101
