Ultra Wideband Radio Transmission Systems

This thesis includes a collection of papers that analyze and derive the properties of Ultra Wideband (UWB) radio systems that use Time Hopping for Multiple Access and binary Pulse Position Modulation. New families and generation methods of Time Hopping codes are proposed and properties in terms of cross -correlation, SNR, error probabilities are given. Moreover, interference issues are addressed and an analysis of radio frequency interference effects to a victim UWB receiver is presented. Finally, a cell search procedure in an asynchronous wireless network based on Ultra Wide Band (UWB) radio is proposed.