EPON系统E1电路仿真及其时钟同步技术

E1 Circuit Simulation and Clock Synchronization Technology in EPON

基于 EPON 的网络接入,通过 E1 电路仿真实现信号传输。其 E1 数据包到 EPON 总线的传输,通过 HDB3线路编码到 NRZ 数字信号的转换,系统及网络时钟设定,EPON 数据帧的组织,E1 仿真电路同步时钟的产生等步骤实现。时钟同步的同步剩余时标法、自适应时钟恢复法和线路时钟恢复法,应根据组网情况合理选择。

For the entering of network based on EPON, the communication of signal was realized through E1 circuit simulation. The transmission of E1 data packet to EPON bus was realized by conversion of HDB3 line encoding to NRZ digital signals, setting up clock of system and network, organizing EPON data frame, and generating synchronization clock of E1 circuit simulation etc. According to the instance of organizing network, the ways of generating synchronization clock was selected such as spare timing mark method, self-adapt clock resuming method and line clock resuming method.