Automobile radar co-channel interference modeling, simulation and outage analysis

In this paper we present a simulation based study for the co-channel interference in automobile radars. When multiple automobile radar units (vehicles) use the same frequency channel for profiling the environment (detecting the targets/vehicles) it is of utmost importance how the co-channel interference would affect the radar operation. The interference becomes an issue especially during mass deployment. We present a simulation model for the radar interference study and analyse the target signal to interference power ratio (SIR). The statistical distribution of the SIR and the corresponding outage probability are analysed. The simulator takes into account three random phenomena, the random positions of the vehicles, the random number of vehicles, and the random shadowing of the radar signals. The conditional distribution for the SIR and the probability of outage are presented for various environments.