Non-Orthogonal Multiple Access Technology Based on Optical Wireless Communication
Applying non-orthogonal multiple access(NOMA)technology to optical wireless communication(OWC)systems can improve sys-tem capacity and spectral efficiency.The basic principle and system structure of OWC-NOMA are first presented,and the related research progress including power allocation,user grouping,beam control,and other optimization techniques is summarized.Then,the integration of OWC-NOMA with emerging technologies such as unmanned aerial vehicles(UAV),intelligent reflecting surface(IRS),and hybrid optical/ra-dio frequency(RF)is introduced,which is capable of facilitating more communication scenarios and requirements.Finally,the overall perfor-mance improvement of the system by applying reinforcement learning on a novel UAV-assisted OWC-NOMA scheme is demonstrated.
NETL
NSTL
万方数据
