Characterisation and Cancellation of Interference With Multiple Phase-coded FMCW Dual-Function RADAR Communication Systems

In this paper, the impact of interference between multiple phase-coded Frequency Modulated Continuous Wave (FMCW) Dual Function Radar Communication (DFRC) systems is analysed. For the RADAR receiver, interference occurs when another nearby DFRC system is active. For the communication receiver, RADAR echoes from the same DFRC system interfere with the receiver. The performance achieved by interference cancellation at both functions is studied in different scenarios. Finally, stochastic geometry is used to analyse in a two-way automotive scenario which signal component (RADAR or communication) is dominant, in order to evaluate whether the interference should be cancelled at the RADAR receiver based on the communication receiver output or the opposite.