Ultra wideband (UWB) communication systems are characterized by high data rates,
low cost, multipath immunity, and low power transmission. They are widely used in
wireless communications, networking, radar, imaging, and positioning systems. In
2002, the Federal Communication Commission (FCC) legalized low power UWB
emission between 3.1 GHz and 10.6 GHz for indoor communication devices
stimulating many novel UWB applications such as personal area networks (PANs),
accurate tracking and location, safety and homeland security....