Best autorrelation function
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Hi What is a nice function that have the autocorrelation function very near to a dirac function? http://en.wikipedia.org/wiki/Dirac_delta_function[^] I mean, I know that for digital communication is often used a Backer sequence, made by -1/+1 symbols http://en.wikipedia.org/wiki/Barker_code[^] that gives a very low autocorrelation, and a very sharp peak in its middle point. I need something similar but more analog-like function. I was thinking to a chirp function http://en.wikipedia.org/wiki/Chirp[^] ... but I am asking this question to know is someone know that there is a mathematical better/optimal choice. Thanks
Russell