Secure UAV-to-Ground MIMO Communications: Joint Transceiver and Location Optimization

Unmanned aerial vehicles (UAVs) are foreseen to constitute promising airborne communication devices as a benefit of their superior channel quality. But UAV-to-ground (U2G) communications vulnerable eavesdropping. Hence, we conceive sophisticated physical layer security solution for improving the secrecy rate multi-antenna aided U2G systems. Explicitly, MIMO wiretap channels is derived by using random matrix theory. The resultant explicit expression then applied in joint optimization transceiver and UAV location relying on an alternating technique. Our numerical results show that conceived facilitates secure even challenging scenario, where legitimate confidential information inferior eavesdropping channel.