Intra-body communication with USRPs

Now I’m trying to make an intra-body communication system
Thus I’m looking for freq. characteristics of the human body
I found something like below:

[image: methods.png]
http://dl.dropbox.com/u/11382666/methods.png

Here are 3 methods.
The question is that if I tried to make the intra-body communication
system
with 2 USRPs,
What does this system correspond with?
I’m not pretty good at CIRCUITry… and internal structure (schema) of
USRP
If someone has idea with it, I appreciat it in advance.

Thank you