摘要
由于物理编码子层(PCS)处于EPON系统物理层的最高层,它的功能实现对于上层而言起着重要的作用。详细介绍了PCS层的功能,并根据功能对基于光网络单元(ONU)端的发送模块和接收模块的设计进行阐述,并在此基础上介绍了PCS层消息的处理流程。
Owing to the PCS（physical code sublayer） is located on the top of the physical layer of EPON system,the implementation of its functions will play an important role for the upper layer.The functions of PCS are introduced in detail,and according to the functions of the PCS the design of the transmission module and receiving module based on ONU end are described.On this basis the flow of work of PCS message is presented.
出处
《光纤与电缆及其应用技术》
2011年第2期40-44,共5页
Optical Fiber & Electric Cable and Their Applications
