光网络单元

本文主要研究的是该项目的子项目&光网络单元（ONU）的设计与实现。

This paper is an important part of this project , which is the design and implement of optical network unit ( ONU ) of the EPON .

由于接入网的成本决定了它的推广和应用，光网络单元（ONU）又是WDM-PON的主要组成部分之一，因而对WDM-PON中ONU的实现方法的研究有着重要的意义。

Due to the cost of the access networks determine its popularization and application and Optical Network Unit ( ONU ) is the main component of WDM-PON , the realization method of ONU in the research has the vital significance .

该方案不仅增加了系统容量，而且能够容纳更多的光网络单元（ONU），便于光接入网从FTTC，FTTB向FTTH发展。

The scheme increases system capability and contains more optical network units ( ONUs ), which promotes optical access network to evolve from FTTC or FTTB into FTTH .

FTTH是光纤接入网发展的最终形式，运营商的光纤直达用户家中，通过光网络单元（ONU）连接各种终端设备，向用户提供多种多样的电信业务。

FTTH is developing optical access network in final form , operator of the fiber to the home , by the optical network unit ( ONU ) connected to various terminal equipment , to provide users with a variety of telecommunication services .

这对光网络单元（ONU）的设计及与光线路终端（OLT）的通信提供重要依据。

The software of management and control in GPON system and the technology of operation management maintenance are mainly discussed , which is the important reference for designing the optical network unit ( ONU ) and communicate with optical line terminal ( OLT ) .

动态带宽分配分类的主要分支是：授权分配、授权调度以及光网络单元下的队列调度。

The main branches of my classification of DBA are : grant sizing , grant scheduling , and optical network unit queue scheduling .

为了降低光网络单元的成本预算，我们对下行的光载波进行了上行传输开关键控信号的重调制。

We also realize wavelength remodulation for carrying upstream on-off keying ( OOK ) data to reduce the cost budget at the optical network unit .

无源光网络的光网络单元分接电路设计

Demultiplexing Circuit Design of Optical Network Unit for PON

动态带宽分配是以太无源光网络的重点研究领域之一，其中光网络单元（ONU）内的带宽分配影响到用户的服务质量。

Dynamic bandwidth allocation ( DBA ) is among the main research fields of EPON ( Ethernet Passive Optical Networks ), and the intra-ONU DBA influences the QoS of end users .

介绍了遗传算法在无源光网络（PON）规划中的光分支器（OBD）和光网络单元（ONU）位置分配问题的应用。

Introduces the application of position layout of ONU and OBD on PON based on genetic algorithms .

以太无源光网络由局侧的光线路终端、用户侧的多个光网络单元及光分配网络组成，采用无源器件进行连接和交换。

The Ethernet passive optical network consists of in department optical network terminal , many optical network elements in user department , and optical distribution network ; the passive equipments were adopted to carry out the linkage and exchange .

提出了一种基于光线路终端（OLT）的接入允许控制（CAC），能够在各光网络单元（ONU）之间合理分配上行资源。

A kind of call admission control ( CAC ) based on OLT is proposed . It can rationally allocate up-link resources between ONUs .