In the end , the pcb design and implementation of olt and onu are submit 最后,給出了olt和onu的pcb設計與實現。
Onu optical network unit 光纖網路單體
Onu : optical network unit 光纖網絡單元
The passivated catalyst was tested or characterized by onu autothermal apparatus , xrd , dta and bet 對鈍化后的催化劑進行了onu自熱測試和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 然后根據運營商的實際需要,提出另一種基于服務等級協議( 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必須在收到onu上行突發的前幾個比特內實現比特同步,才能恢復onu的信號。
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 每個onu到olt接收機的傳輸損耗不同,因此所接收到的上行光功率將存在較大的動態范圍。
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技術的背景、標準協議的概述、系統中olt和onu的功能結構和動態帶寬分配算法。
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系列協議的基礎上,以及結合目前國際國內的研究成果,提出了gpon系統中olt 、 onu的結構設計方案。
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系統采用局端機( olt ) -用戶端機( olt )兩級結構,中間由無源光分配網絡完成下行光功率分配和上行光耦合。