Re: Ass #1 problem 3-21

Amr Mohamed (amrm@ece.ubc.ca) Fri, 28 Jan 2000 10:21:05 -0800 

From: "Amr Mohamed" <amrm@ece.ubc.ca>
Subject: Re: Ass #1 problem 3-21
Date: Fri, 28 Jan 2000 10:21:05 -0800





But variance is 0dB not 0. So, the variance is actually 1=10^0 which means
that X is not constant, isn't that correct?

Also, I think the PL(d0) in both cases (forward link and the co-channel
link) is the same because the bases have the same Gain and d0 is
constant=1Km. So, if we need the ratio of the two paths loss, we do not
actually need Gm and Gb or the frecuency, is that correct?

Rgds,
Amr


> On Fri, Jan 28, 2000 at 08:35:28AM -0800, gordon yang wrote:
>
> > > Hint: the sum of two uncorrelated Gaussian RV is also Gaussian
> > > RV.
> >
> > For problem 3-21, since the variance of B1's path loss is 0, do
> > we actually just have one RV?
>
> Oh, my.  Yes, you're right.  I didn't notice that one "RV" was
> actually a constant.  That should simplify things.
>