Performance of TH-PPM systems with narrowband interferers

This paper investigate the performance of time hopping (TH) pulse position modulation (PPM) systems in the presence of narrowband interference. In particular, we derive closed-form expressions for the bit error probability (BEP) of a TH-PPM system with independent asynchronous tone interferers with arbitrary amplitudes and frequencies. Different scenarios are taken into consideration with fading on the interferer and/or on the useful signal. Simulation results show that the assumption of tone interferers is a good approximation for narrowband interferers. It is shown that our analytical results are useful in assessing the possible coexistence of TH-PPM systems with existing wireless systems.