Over the coming decades, high-definition situation ally-aware networks have the potential to create revolutionary applications in the social, scientific, commercial and military sectors. Ultra-Wide Bandwidth (UWB) technology is a viable candidate for enabling accurate localization capabilities through Time-Of-Arrival (TOA)-based ranging techniques. It is difficult to model indoor mobile radio channel because the channel parameters varies significantly. The indoor radio channel depends heavily on factors which include building structure, layout of rooms and the type of construction materials used.