Impact of timing jitter on carrier-based DS-UWB communications over AWGN and multipath channel

In this paper, the impact of timing jitter en a carrier-based direct sequence ultra wideband (DS-UWB) systems over an additive white Gaussian noise (AWGN) and Rayleigh channel with exponentially decaying power delay profile (PDP) is investigated. A selective Rake (SRake) receiver is employed to capture the energy from the received signal. Gaussian distributed timing jitter is assumed to take place at the template generator of the SRake receiver. Theoretical framework to obtain the system bit error rate (BER) corresponding different system parameters such as signal to noise ratio (SNR), root -mean-square jitter (RMSJ), system bandwidth, center frequency and Rake fingers is presented. It is found that BER performance degrades significantly as RMSJ and center frequency increase. Employing wider system bandwidth also tends to degrade BER performance. Using higher SNR and number of Rake fingers is found to be able to improve the BER performance.