Interference Mitigation Methods for Coexistence of Radar and Communication

We consider a communications-centric spectrum
sharing scenario where the communications link has a minimum
service constraint in throughput and the radar maximizes its receive signal-to-interference-plus-noise ratio (SINR). Prior works
on joint power, allocation indicate that, under a communication-centric scenario, radar transmit power is gradually reduced
as the throughput demand for communications link increases.
Such an approach results in severe degradation of radar SINR,
especially when the communications link suffers an outage. We
propose methods based on successive-interference-cancellation to
improve the radar SINR. This comprises both coexistence and
coordination approaches. Numerical experiments show significant
improvement in radar SINR when communications throughput
demand rises and eventually goes into the outage.