Adaptive beamforming antenna scheme to minimize the interference in a unmanned aerial vehicle (UAV) MANET

Unmanned aerial vehicle (UAV) network is a network consisting of lying UAVs with communication capabilities. There are many technical challenges and problems due to a highly dynamic and mobile UAV network environment. In this paper, we focus on an inter-node interference problem. To overcome the interference problem and guarantee the communication quality, we propose an adaptive beamforming antenna scheme to meet a given outage constraint and to mitigate the interference. We analyze the outage probability of the communication link, and find the optimal beamwidth of the directional beam. Numerical results show that an adaptive beamforming antenna scheme is the most efficient among fixed beamwidth schemes and an omnidirectional antenna scheme in terms of outage and the amount of interference.