  Unmanned aerial vehicle (UAV) communication is of crucial importance for
diverse practical applications. However, it is susceptible to the severe
spectrum scarcity problem and interference since it operates in the unlicensed
spectrum band. In order to tackle those issues, a dynamic spectrum sharing
network is considered with the anti-jamming technique. Moreover, an intelligent
spectrum allocation and trajectory optimization scheme is proposed to adapt to
diverse jamming models by exploiting our designed novel online-offline
multi-agent actor-critic and deep deterministic policy-gradient framework.
Simulation results demonstrate the high efficiency of our proposed framework.
It is also shown that our proposed scheme achieves the largest transmission
rate among all benchmark schemes.
