Narrowband interference suppression in time hopping impulse radio

Ultra-wideband (UWB) technology has been considered to offer an innovative solution for future short-range high-speed wireless communications. Interference suppression is important for the UWB devices to operate over the spectrum with established narrowband systems. In this paper the use of a notch filter in time-hopping impulse radio (TH-IR) for UWB communication is considered, where a Gaussian monopulse is employed with pulse position modulation (PPM). A complete analytical framework is provided for performance evaluation using a transversal-type notch filter to reject narrowband interference. The results show that the use of a notch filter can improve the system performance significantly.