UAV Relay Assisted Cooperative Jamming for Covert Communications Over Rician Fading

Covert communication can hide the legitimate transmission from unauthorized eavesdropping. Benefiting deployment flexibility, unmanned aerial vehicles (UAVs) be utilized to enhance confidentiality. In this correspondence, we consider a covert network with aid of full-duplex UAV relay, which is employed help and confuse warden. The warden adopts radiometer detect transmission. We first find optimal detection threshold calculate minimum error probability. Furthermore, closed-form expression outage probability via relaying derived over Rician fading. Then, power optimization problem formulated maximize effective convert throughput covertness constraint. Numerical results illustrate that cooperative jamming disrupt warden, tradeoff guarantee effectively.