软件锁相环并行化方法研究

Research on Method of Parallel Software PLL

为了提高软件锁相环的运行效率,根据虚拟无线电系统中数据块式的传输模式,提出了一种基于数据冗余的软件锁相环并行化设计方法。该方法克服了由于并行数据的非连续性对软件锁相环性能的影响;充分利用了计算机系统的并行处理性能。详细论述了该方法的实现原理,从加速比、并行效率方面分析了该方法的实时性。仿真结果表明并行化的软件锁相环同单环具有相同的跟踪精度与动态性能,并在计算机平台上通过对实际信号的解调,验证了该方法的实时性。

In order to improve the efficiency of software PLL （SPLL）, a method of parallel SPLL based on the redundant data was proposed according to the data block transmission mode in the virtual radio system. The method avoids the affection on the performance of SPLL by discontinuous parallel data block, and makes good use of the parallel capability of computer. The basic theory about the method were discussed, and the performance of real-time was analyzed with acceleration ratio and parallel efficiency. The results of simulation show that the parallelized SPLL has very similar tracking precision and dynamic performance as the single SPLL. The performance of real-time of this method is proved valid by demodulation PM signal on the general computer.