Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.


networm
Posts:
327
Registered:
10/6/05


Re: How to decide if a vector process is a Gaussian Vector processes?
Posted:
May 22, 2006 10:22 PM


Stephen MontgomerySmith wrote: > comtech wrote: > > Hi all, > > > > Suppose I have a vector random process call it Xt, > > > > where Xt is a vector of [X1t, X2t, X3t, ... Xm_t], so there are m > > subprocesses inside this vector random process. > > > > What are the conditions that the whole vector process is a Gaussian > > vector process? > > > > Maybe I just need to decide whether each individual process is Gaussian > > or not? > > > > Does individual Gaussianity of each individidual process <=> the whole > > vector process is Gaussian? > > > > No. For example, > > X1 = g > X2 = s g > > where g is a centered Gaussian and s takes the value plus or minus 1 > with prob 1/2, and g and s are independednt r.v.
Okay, so what's the precise statement for judging a vector process is a Gaussian vector process?
Thanks a lot!



