A realtime testbed for a third generation mobile communication system

Third generation mobile radio systems like UMTS or FPLMTS will supply a large variety of voice and data services with variable service bit rates. In Europe investigation and development in this field is supported by the Commission of the European Union within the RACE-II Mobile Project Line. Within this frame the RACE-II ATDMA project aims at investigating the potential of advanced TDMA systems with respect to the goals of UMTS. On the basis of propagation measurements, channel modelling and technique studies two complementary testbeds, a realtime and a simulated testbed, are being developed to evaluate the performance of this approach by simulation, bench, and field trials. The paper briefly describes the project´s system model, the relation between this model and the implementation of the realtime testbed. It gives an overview what the goals and the scope of this testbed are and provides a brief introduction into its hardware and software architecture and realisation