Effect of Channel Correlation and Path Loss on Average Channel Capacity of Body-to-Body Systems

The channel capacity in body channels is of great importance since it determines the amount and type of data that can be transmitted using the body as a media for communication. In this communication, the average capacity of body-to-body channels, where the transmitter and the receiver are on different human bodies, is investigated in an indoor wireless environment when using multiple antennas at the transmitter and the receiver, the so-called MIMO system. Different types of antennas are studied, namely PIFA, inverted IFA and monopole antennas, and the capacity in these channels is compared to on-body case. The impingement of the spatial correlation due to the presence of a high line of sight (LOS) component, on the average capacity is also studied. The effect of path loss on average capacity is asserted as well.