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Spectrum sharing with rotating radar: Implications for cognitive radio rendezvous

To date, research on spectrum sharing has almost exclusively studied dynamic access limited to agility in time & frequency. Even prior work specifically on sharing with radar systems typically proposes switching to another frequency upon detection of radar activity. An opportunity exists for a more comprehensive reuse of spectrum in the space & time dimensions in the case of rotating radars. Drawing from measurements of an actual radar system, this paper studies how an ad hoc network of cognitive radios lacking a common control channel can discover one another-the rendezvous problem-while simultaneously coexisting with this class of radar.