Car-to-car communication using efficient far-field RCS simulations to account for reflecting objects in the communication path

Recently car-to-car communication has caught a lot of attention due to its possibilities to reduce traffic accidents in streets getting continuously busier nowadays. The major requirement of an introduction of such a technique in cars is that the car constantly monitors the environment and alerts the driver about possible threats. Several high frequency bands using different physical methods have been reserved for these intelligent communication systems in the last years, e.g. 24 GHz/77 GHz for UWB (Ultra-Wideband) and SRR (short range radar). This paper will give an overview about still on-going work related the topic car-to-car communication which is also performed in the BMBF (Bundesministerium für Bildung und Forschung, Germany) project SIFUKO. The aim of this project is to investigate methods to substitute complex car-to-car measurements with numerical simulations. This allows for a better modelling of these scenarios using deterministic radio channel simulation. General acceleration methods like special extensions to the MLFMM (multi-level fast multipole method) and a new LE-PO (large element physical optics) are introduced as well as examinations about the substitution of objects in the communication path by using RCS (radar cross section) values are described. Examples show the possibilities of these different approaches.