双周期泄漏-序列调制法

Double Period Leaking and Modulating Method

在ＳＤＨ同步系统中，指针调整所引起的抖动因其具有幅度大、频率低的特点，很难用普通的方法去除而成为数字网传输损伤的重要因素。本文将提出一种新的方法——双周期泄漏－序列调制法。并针对其原理、参数的选择以及计算的结果做一些讨论。此方法综合了比特泄漏与收端门限调制的共同作用，能有效降低抖动，且电路实现也很简单。

The timing jitter induced by pointer adjustments represents a technical problem in SDH based network.Because of the characteristics of its large amplitude and low frequency,the result of reducing jitter is unsatisfied using usual way. A new method of pointer spreading——double period leaking and modulating desynchronizer is proposed in this paper.The effect on reducing jitter is obvious and its curcuit is simple.