在具体实现上采用了QNX的多进程编程思想，对整个系统的流程进行了分析设计，将双下行信道的实现分为三个大的模块进行讨论。
In the implementation, we used the multiprocessing method in QNX to analyze the general flow chart of system, and divided the realization of dual downstream channel into three modules.
在具体实现上采用了QNX的多进程编程思想，对整个系统的流程进行了分析设计，将双下行信道的实现分为三个大的模块进行讨论。
In the implementation, we used the multiprocessing method in QNX to analyze the general flow chart of system, and divided the realization of dual downstream channel into three modules.
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