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Highlights from
Estimation for Hidden Processes

from Estimation for Hidden Processes by Yves Rozenholc
Nonparametric estimation of density, regression or variance functions for hidden processes using mod

symexp(sigma,n,p)
function X = symexp(sigma,n,p)

if nargin<3, p=1; end;

X = exprnd(1/sqrt(2),n,p);

X = sign(rand(size(X))-0.5).*X;

X = sigma*X;

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