Comparison and Implementation of the Directional Geometric-Stochastic Based Channel Model

A mobile radio channel model is an essential prerequisite for the simulation, development and accurate testing of mobile radio systems. The European Co-operation in the Field of Scientific and Technical Research (COST) projects have a long history of research about channel models. The COST 207 project in the 1980s and in the early 1990s played an important role in the development and approval of the GSM system. In the mid 1990s the COST 231 project focused mainly on the path loss of different radio environments. The third and the fourth generation of mobile radio systems take advantage of larger complex systems, like multiple-input and multiple-output (MIMO) systems. Therefore more detailed information about the radio channel has to be considered that was not addressed before, like: • The information about direction-of-arrivals (DoAs) at both ends of the radio system, and • Movements of the mobile station (MS) within a cell change the directional properties of the radio channel, like slowand fast-fading, distinct signal paths appear and vanish again.