Ultra wideband channel characterization for invasive biomedical applications

Implantable smart biomedical devices that collects vital physiological data and transmits them wirelessly over the communication link seemed to be a sci-fi concept decade ago. But with advancements in microelectromechanical systems and circuit design techniques, today this sci-fi concept can be realized using UWB (Ultra Wideband) radio technology which has shown tremendous potential to qualify as radio technology for invasive BCI applications. There are many problems that needs to be addressed in order to make the dream come true. In this paper, we attempt to study behavior of UWB radio signals when they pass through cerebellum tissue of human and reach the receiver planted on surface of human body. We do analysis of received signal strength, channel capacity and signal to noise ratio of signal at different center frequencies and implant depth which are presented in paper. No channel models for in body communication using UWB radio technology are available in literature and our work, is a step in same direction.