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The ever-growing number of wireless communication devices and technologiesdemands spectrum-sharing techniques. Effective coexistence management iscrucial to avoid harmful interference, especially with critical systems likenautical and aerial radars in which incumbent radios operate mission-criticalcommunication links. In this demo, we showcase a framework that leveragesColosseum, the world's largest wireless network emulator withhardware-in-the-loop, as a playground to study commercial radar waveformscoexisting with a cellular network in CBRS band in complex environments. Wecreate an ad-hoc high-fidelity spectrum-sharing scenario for this purpose. Wedeploy a cellular network to collect IQ samples with the aim of training an MLagent that runs at the base station. The agent has the goal of detectingincumbent radar transmissions and vacating the cellular bandwidth to avoidinterfering with the radar operations. Our experiment results show an averagedetection accuracy of 88%, with an average detection time of 137 ms.

Demo: Intelligent Radar Detection in CBRS Band in the Colosseum Wireless Network Emulator