Abstract

该文基于一种全新的基于OFDM的星载交换方案，给出了此星载交换方案的星地下行链路跨层设计工作流程和相关实现方法，此方法根据星地下行链路信号发射功率上限、关于每个地面设备的当前点波束星地下行链路信道状态、每个星地下行链路传输业务目的地、业务类型、业务传输速率要求等参数，实现在属于不同地面设备的各个星地下行链路传输业务之间自适应分配子载波并自适应配置每个子载波的调制制式，生成每个传输业务与子载波的对应关系，充分利用链路资源并满足传输业务的QoS要求。

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