A Study on the Effect of Interference on Time Hopping Binary PPM Impulse Radio System

In this paper, the effects of the interference environments on the performance of the time hopping (TH) binary PPM impulse radio (IR) system are presented. Based on the monocycle pulses available within the frequency of 3.1~10.6 GHz permitted for application by FCC, a PPM modulated TH IR system simulator was designed and followed by the analysis of the monocycle pulse characteristics as well as the system performance. Particularly for the evaluation of the system performance, the multiple access interference and the narrowband system interference signals were considered as the interference signals. Since the narrowband system interference signal has very narrow bandwidth and very large amplitude compared with those of IR system, the analysis of the IR system performance was implemented by considering the interference power and band fraction ratio of the narrowband interference signal.