In the end , the pcb design and implementation of olt and onu are submit 最后,给出了olt和onu的pcb设计与实现。
Onu optical network unit 光纤网路单体
Onu : optical network unit 光纤网络单元
The passivated catalyst was tested or characterized by onu autothermal apparatus , xrd , dta and bet 对钝化后的催化剂进行了onu自热测试和xrd 、 dta 、 bet等表征。
Two groups of onus report and grant in turn , as the network load changes , olt converts the way of granting every onu 然后根据运营商的实际需要,提出另一种基于服务等级协议( sla )的算法sb - dba 。
Only when olt receives the first few bits of the uplink burst of onu and achieves the bit synchronization can the onu signal be restored Olt必须在收到onu上行突发的前几个比特内实现比特同步,才能恢复onu的信号。
Since the transmission loss from each onu to the olt receiver is different , there will exist a wide dynamic range in the received uplink optical power 每个onu到olt接收机的传输损耗不同,因此所接收到的上行光功率将存在较大的动态范围。
The dissertation includes technique background of gpon , protocol summary , function architectures of olt and onu , dba ( dynamic band allocation ) algorithm and so on 本文概括描述了gpon技术的背景、标准协议的概述、系统中olt和onu的功能结构和动态带宽分配算法。
Based on the comprehension of protocols of itu - t g . 984 and the analysis of many research results , we gives a solution of the architecture design for olt and onu in gpon system 在理解itu - tg . . 984系列协议的基础上,以及结合目前国际国内的研究成果,提出了gpon系统中olt 、 onu的结构设计方案。
The epon network includes optical line terminal ( olt ) and optical network unit ( onu ) . onuses share the optical distribution network ( odn ) trunk fiber back to the central office Epon系统采用局端机( olt ) -用户端机( olt )两级结构,中间由无源光分配网络完成下行光功率分配和上行光耦合。