Implantable smart biomedical devices that collects vital data continuously and transmits them wirelessly seemed to be a sci-fi concept a decade ago. Today with advancements in microelectromechanical systems and circuit fabrication technology supported by Ultra-wideband radio technology, this concept no longer seems to be a sci-fi dream. Still there are many issues that need to be addressed to realize this dream. In this thesis, we present results for wireless channel modelling of Ultra-wideband signals used in brain computer interface technology. This channel modelling is an imperative part of communication systems and literature survey shows that no such steps have been taken in the past to study wireless channel for biomedical applications. Received signal strength and results obtained from analysis of impulse response are discussed in detail.