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以自适应帧长传输的高级在轨系统(AOS)为对象,从提高系统吞吐量出发,对包信道复用、虚拟信道(VC)复用及帧同步技术进行研究并提出相关的算法。包信道和VC复用算法可有效解决传统固定长度帧的生成与传输问题,降低复用时延,提高复用效率;帧同步算法则解决已有算法受帧长度标识误码影响较严重的问题,提升帧同步性能和数据处理可靠性。在分析、推导并仿真各算法性能公式和参数的基础上,对系统吞吐量性能进行仿真比较。结果表明,新算法能够很好地适应AOS自适应帧长系统,保证系统高吞吐量性能。
Based on the advanced on-orbit system (AOS) which adapts to the frame length transmission, the packet channel multiplexing, virtual channel (VC) multiplexing and frame synchronization are researched and the relevant algorithms are put forward to improve the system throughput. The packet channel and VC multiplexing algorithm can effectively solve the problem of generating and transmitting the traditional fixed-length frames, reduce the multiplexing delay and improve the multiplexing efficiency. The frame synchronization algorithm solves the problem that the existing algorithms are seriously affected by the frame length identification error , Improve the frame synchronization performance and data processing reliability. On the basis of analyzing, deriving and simulating the performance formulas and parameters of each algorithm, the system throughput performance is simulated and compared. The results show that the new algorithm can adapt well to the AOS adaptive frame length system and ensure the high throughput of the system.