Simulations of the time and frequency selective outdoor mobileradio channel

A prerequisite for the performance analysis and optimization of new mobile communication systems is a model for the channel behavior. Channel fading simulation based on the model is generally chosen for flexible validation, testing, and comparison of new designs. To simulate the time- and frequency-selective behavior of macrocell mobile radio channels, a method is presented, which is based on a physical model for the radiowave propagation process in these environments. The approach enables a generation of complex impulse responses as given by the statistics of the underlying channel behavior. Delay profiles and fading characteristics of the multipath structures can be efficiently simulated by reproducing the physical wave interference process, thereby incorporating the different channel characteristics that are observed in different environments, such as urban or suburban areas. The accuracy of the method is demonstrated by comparison of simulated results with the equivalent measured functions