Re: Ass #1 problem 3-21

gordon yang (gordony@ece.ubc.ca) Fri, 28 Jan 100 08:35:28 -0800 (PST) 

From: gordon yang <gordony@ece.ubc.ca>
Subject: Re: Ass #1 problem 3-21
Date: Fri, 28 Jan 100 08:35:28 -0800 (PST)



> 
> On Thu, Jan 27, 2000 at 09:48:54PM -0800, Amr Mohamed wrote:
> 
> > Anyone solved problem 3-21 and can give us a clue about the
> > relation betwee c/I and PL(d) for B1 and B2?
> 
> The forward link is the one from the base to the mobile.  The
> mobile's C/I will be worst at the cell boundary.  It will be
> given by the ratio of the path loss from the desired base to the
> path loss from the interfering base.  However, in this case each
> of the path losses has a probability distribution so you will
> have to find the probability distribution of the C/I.
> 
> Hint: the sum of two uncorrelated Gaussian RV is also Gaussian
> RV.
> 
> -- 
> Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592
> 
Hi Dr. Casas,

For problem 3-21, since the variance of B1's path loss is 0, do we actually
just have one RV?

Thanks.

Gordon