... applied in the context of UWB systems, the difficulty of accurate synchronization is accentuated in PPM UWB systems owing to the fact that information is transmitted by the shifts of the pulse ... processing model for a Transmit-reference UWB (TR -UWB) system is given in (Dang et al, 2006). The model considers the Novel Applications of the UWB Technologies 128 x(k;τ)=r(t+kT+τ)r(t+(k−1)T+τ)dt ... Abarbanel, H., Larson, L. & Yao, K., ( 199 9). Chaotic Pulse Position Modulation for UltraWide-Band Communation System, Proceedings of UWB 99 , Sept., 199 9, pp.28-30. Maggio, G.M., Rulkov, N....