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为满足多点波束宽带卫星系统各波束不同的业务需求,提高星上功率利用率,对多点波束卫星的功率分配进行优化。在充分考虑卫星下行链路信道条件的不同及各波束最小容量需求的基础上,以服务公平性和容量最大化为目标进行建模,提出了一种波束间功率优化分配算法OIBPA(optimized inter-beam pow-er allocation),并采用凸优化理论对该优化算法进行分析。通过仿真分析,该算法与传统的功率分配算法相比,在考虑信道条件的基础上提高了卫星的功率利用效率,降低了计算复杂度,且可以根据业务优先级进行灵活地调整,适用于多点波束宽带卫星系统。
In order to meet the different business needs of each beam of the multi-spot beam broadband satellite system, the power utilization rate of the satellite is increased, and the power distribution of the multi-spot beam satellite is optimized. Based on the consideration of different satellite downlink channel conditions and the minimum beam capacity requirements, aiming at the objective of service fairness and capacity maximization, an optimized inter-beam power allocation algorithm (OIBPA) beam pow-er allocation, and uses convex optimization theory to analyze the optimization algorithm. Through simulation analysis, compared with the traditional power allocation algorithm, this algorithm improves the power utilization efficiency of satellite based on the channel conditions, reduces the computational complexity, and can be flexibly adjusted according to the priority of the service, which is suitable for more Spot Beam Broadband Satellite System.