Ultra-Wideband(UWB) is a radio technology to accomplish multimedia transmitting for HR-WPAN(high-rate wireless personal area network).Being modulated by a group of sharp pulse

UWB sends data through an ultra wide RF and shares in the spectrum with overlapping.UWB possesses excellent characteristics: high spectrum utilization ratio

ambition performance of anti multi-path attenuation

very low emission power and good system security.UWB provides the high-rate wireless connect scheme for consuming electronic devices

make the video connection and desktop application executing on common RF platform.Studying the development of UWB has realistic meaning that includes standardization

products

market and leading trend's technology.The paper provides an overview on UWB specifications

analyses the principle of MB-OFDM(multi-band orthogonal frequency division multiplexing) technology

and introduces the RF platform and its applications based on WiMedia UWB.