Sensing-aided covert communication with pinching-antenna systems: an extended Kalman filter tracks a mobile warden via near-field echoes, and beamforming, artificial noise, and antenna placement are jointly optimized to keep the transmission hidden.
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Pinching Antenna System (PASS) Enhanced Covert Communications: Against Warden via Sensing
Sensing-aided covert communication with pinching-antenna systems: an extended Kalman filter tracks a mobile warden via near-field echoes, and beamforming, artificial noise, and antenna placement are jointly optimized to keep the transmission hidden.