interfDistance how to get the correct forula

[Norberto Barroca]

Can someone explain to me the mathematical steps to get the interfDistance
formula since in the Holger Carl Book:

Distance =square ( (pMax*waveLength * wavelength) /
(16.0*M_PI*M_PI*minReceivePower*L));

mixim simulator :
interfDistance = pow(waveLength * waveLength * pMax /
(16.0*M_PI*M_PI*minReceivePower), 1.0 / alpha);

Regards
n_barroca IT

[Greg81]

Dear Norberto,

there was quite a bit discussion around this issue here:
http://groups.google.com/group/omnetpp/browse_thread/thread/9bdac5a90f76f8e0#

It's been a couple of days since I have looked into it, but here are
additional references:
http://en.wikipedia.org/wiki/Friis_transmission_equation
http://en.wikipedia.org/wiki/Free-space_path_loss

I am sure that if you look at the formula from Hoger Carl's book, you
will find that he assumes a path-loss alpha of 2.0 (typical) and see
that POW(expr., 1/2) = SQRT(expr.).

Cheers,

Greg

On Nov 23, 5:05 am, Norberto Barroca <norberto.barr...@hotmail.com>
wrote: