Ultra Wideband System Performance Studies in AWGN Channel with Intentional Interference

This paper studies the performance degradation of ultra wideband (UWB) radio system in intentionally interfered AWGN channel. Simulated UWB systems utilize pulse shape (PSM), pulse position (PPM) and pulse amplitude (PAM) data modulation schemes. All the modulation schemes are binary. The pulse waveforms used in the study are based on a Gaussian pulse, being its first four derivatives. Interference model is coloured Gaussian noise, having 60 MHz bandwidth at both UMTS uplink and downlink bands. The results showed that PAM modulation outperforms the other studied modulation schemes. If PSM is used, the selection of the used pulses set also the sensitivity against interference. PPM modulated system retains its performance while the interfering power is increased. However, its overall performance is the worst among the implemented modulations.