Research on Software Defined Spectrum Sharing Cognitive Multi-Beam Satellite Communication System

The increasing number of users of satellite communication system needs more spectrum and bandwidth resources. In the future, multi-beam broadband satellite system must have greater flexibility and be able to adjust dynamically according to the change of traffic flow. Dynamic spectrum access is an effective method of spectrum sharing, which can realize the effective utilization of spectrum resources. Cognitive radio spectrum sharing technology is an effective way to improve spectrum efficiency and realize the effective utilization of spectrum resources. This paper studies software-defined spectrum-sharing cognitive radio multi-beam broadband satellite network system. The technology achieves effective management of satellite resources, improves the utilization of satellite resources and improves the performance of multi-beam satellite communication system. The principle of software-defined spectrum-sharing cognitive multi-beam broadband satellite network system is discussed. The spectrum utilization efficiency and throughput are analyzed.