Optimum traffic distribution algorithm for satellite system taking account of satellite power limit

摘要

In satellite communications systems, satellite transmitting power (in short, 'satellite power') is one of the critical radio resources for satellite systems, as well as spectrum resources, due to the limited ability of onboard electric generator. Therefore, for attaining optimum satellite radio resource utilization, it is not enough to just consider the spectrum resources but also to take account of the satellite power. In multiple satellites systems, the coverage of a satellite has overlapping areas with those of adjacent satellites. In this case, the traffic demand in overlapping area can be accommodated by either of visible satellites. For these systems, this paper proposes an algorithm to provide an optimum traffic distribution among satellites. The algorithm adopts linear programming model considering satellite power limits. Numerical examples demonstrate that the proposed algorithms contribute to maximizing the system capacity.