A Simulator for CaCS-based Radar Systems in Multi-User Automotive Scenarios

A simulator for evaluating the impact of interference on the communication link built between communication-assisted chirp sequence (CaCS) nodes in multi-user scenarios is presented. The proposed simulator mainly supports chirp modulation systems that adopt a narrow bandwidth for communication in radar-based systems and can be adapted for similar approaches that employ chirp modulation schemes. The simulator analyzes the interference by adopting a microscopic software tool (VISSIM) for building the scenarios anticipated in automotive applications. Furthermore, wave propagation has been implemented by adopting a ray-tracer tool to represent the communication link as one or several trajectories between the nodes. Finally, the output of the wave propagation tool has been evaluated and further processed in MATLAB in terms of the relative cumulative interference and bit error ratio based on the examined scenarios.