Cooperative Transmission of Wireless Information and Energy in Anti-Eavesdropping UAV Relay Network

Aims at the problem of UAV(unmanned aerial/air vehicle) wireless communication network interference signal, physical layer security and energy efficiency, a cooperative transmission scheme of wireless information and energy in the anti-eavesdropping UAV relay network based on interference alignment and power splitting is proposed. UAV relays to send artificial noise interference to interrupt eavesdropping, and filter out the effects of artificial noise and interference signals through distributed interference alignment at the receiving end. At the same time, the UAV antenna is equipped with a power divider to collect energy while receiving signals Increase the UAV relays life time without affecting normal communication. The feasibility analysis of the network was carried out, and the influence of transmitted noise and nontransmitted noise on network performance and eavesdroppers was compared. At the same time, the influence of different segmentation ratios on energy collection efficiency and communication and speed was analyzed.