A Semi-Virtual Measurement Platform for Investigation of Car-to-Car/Car-to-X Multi-Antenna-System Performance at 5.9 GHz

A new method for evaluation of multi-antenna-systems for Car-to-Car/Car-to-X (C2C/C2X) standards at 5.9 GHz is presented. First, the complex radiation patterns of the car integrated antennas under test are measured. On base of this data a virtual test drive is performed in a 3D city model using a ray tracing method. The radiation characteristics of the antennas are then fed into the transmission channel of a C2C/C2X transmission system which is emulated in a real hardware measurement setup. The setup consists of a transmitter, the emulated transmission channel and a C2C/C2X receiver which is expanded by a diversity circuit, being part of the devices under test. The semi-virtual test drive enables entirely reproducible test drives in a city scenario for evaluation, comparison and test of a set of C2C/C2X -antennas which are integrated in a car and connected with a diversity circuit.