PON的多址接入技术研究

Study on multiple access technology of PON

当前网络用户及高带宽业务不断增加,人们对大容量带宽的接入网提出更高要求。若重新铺设光纤,将花费大量成本,因此,如何在接入网中利用现有光纤提高带宽容量成为研究重点。分别对基于TDM、WDM、OCDMAS、CM的PON及混合无源接入网进行了研究,分析了各种网络结构优缺点。

Currently, the number of Intemet users and the requirements of high-bandwidth business are continuously increasing, which makes people to put forward higher requirements of large-capacity bandwidth in access network. Re-laying the optical fiber will spend a great cost, therefore, how to use existing fiber in access networks to improve bandwidth capacity as the current focus of the study. PON based on TDM, WDM, OCD- MA, SCM, and hybrid passive access networks have been respectively studied, and the advantages and disadvantages of various structural network are analyzed.