Tetra high speed performance for police and rail applications

The performance of the RES-6 TETRA digital trunked radio standard is examined under the high vehicle speed operational conditions required by two important potential user groups: the railways and the police. It is shown that equalisation is a viable option for police applications in the case where receiver performance is affected by frequency selective effects (e.g. hilly terrain and simulcast environments). However, the high Doppler rates experienced in high speed railway communications has a consequence that equalisation is not feasible in this application. In this case, noncoherent detection with diversity would provide acceptable performance