Energy efficient TH-UWB preamble detection

This paper presents an energy efficient way to detect a UWB Impulse Radio (UWB-IR) signal relying on a Time Hopping sequence with a non coherent receiver. This detection is performed in a periodic manner, observing the received signal on the mean pulse repetition period basis. It allows to derive a simple requirement on the THSs design, to fit our detection scheme. Compared to a straightforward busy channel assessment technique, our detection process provides very good results either for detection reliability or energy efficiency issues. Simulations performed on IEEE 802.15.4a channel models are presented to justify our findings.