迭代伪码捕获算法的改进方法

为了解决扩频通信系统中长伪随机码的快速捕获问题，在分析现有迭代伪码捕获算法 性能的基础上，提出了该算法的改进方法，即多重迭代伪码捕获算法。给出了改进算法的迭 代流程，并与原算法进行了性能的对比分析，结果表明迭代后极大似然估计的误码率较改进 以前有了明显的降低，同时得到了多重迭代伪码捕获算法的最优算法参数。

Improved Method of Iterative PN Code Acquisition Algorithms

To solve the problem of fast acquisition of long PN code, after analyzing the performance of existing iterative PN code acquisition algorithms, an improved method was proposed which is called multi-iterative PN code acquisition algorithm. The iterative process of the improved method was showed, and the comparative performance of the improved method and the original one was analyzed. Simulation results show that the new algorithm can decrease the bit error rate of MAP, and the optimal algorithm parameter is got.