  In this paper, we numerically investigated the in vivo wireless communication
channel for the human male torso at 915 MHz. The results show that in vivo
channel is different from the classical communication channel, and location
dependency is very critical for link budget calculations. A statistical path
loss model based on the angle, depth and body region is introduced for near and
far field regions. Furthermore, multipath characteristics are investigated
using a power delay profile as well.
