L. Mucchi, D. Marabissi, M. Ranaldi, E. Del Re, and R. Fantacci (Italy)
UWB, impulse radio, synchronization, multiple access
techniques, pulse design.
This paper deals with the comparison of different multi
ple access techniques and different impulses in a multi
ple access communication systems based on Ultra Wide
Band (UWB) impulse radio technology under non-ideal
conditions. Several multiple access techniques and im
pulses have been designed and compared in the past, but
mainly with the assumption of perfect synchronization of
the users and perfect recovering of frame synchronization
at the receiver. In this paper this unpractical assumptions
are dropped. The results have been obtained by computer
simulations. The sensitivity to synchronization errors of
the Time Hopping PPM and the Direct Sequence multiple
access techniques has been carried out with two different
pulse shapes: the Gaussian monocycle and the Doublet.
The impact of multiple access interference is also reported
in the paper in order to have an exhaustive comparison of
the UWB systems.