锁相环在SDH网络中的应用

在同步数字网络中,同步是数据流正确传输的基础,因此同步技术是数字传输领域的关键技术。为了实现网络的同步,业界普遍采用锁相技术,因为锁相环的性能优越,尤其是数字锁相环的可调范围更宽而且更容易实现。文中以SDH(同步数字系列)技术为例,介绍了以锁相环为基础的同步技术的原理和特点,根据SDH网络中的同步结构和方式,提供了锁相环在SDH网络同步中的具体应用方案,着重分析了这种结构的特性。这种方案在实际应用中有较好的稳定性,对各种网络的同步是一种很好的参考。

Application of PLL in Synchronous Digital Network over SDH

Synchronization is the base of transferring data correctly in synchronous digital network,so synchronization technique is the key in the data transferring field.In order to synchronize,the phase-locked loop(PLL) is widely used in modern communication system,because its performance is much more superior to other techniques and the digital PLL works even better.Taking SDH for example,this paper introduces the principle and characteristics of synchronization technique based on PLL.According to the structure and method of synchronization in SDH network,this paper provides the practical application of PLL in SDH network,and analyzes its performance.In practice,this application works stably,which is a reference to be used in other digital network.