Research And Implement Of 10Gbit/s EPON Physical Layer

Under the drive of new demand such as hige-bandwidth,intergration of broadband services,which is of multimedia,interactive,etc as main feature,as well as the trend of fiber-based for broadband network,PON technlogy has become the hottest area explored by the world's leading telecom operators presently.As the next generation of EPON technology, 10Gbis/s EPON make great progress in access bandwidth and triple-play business suport,and if the smooth tansition from 1Gbit/s EPON to 10Gbit/s EPON can be achieved,in addition to increas rapidly the performace of EPON network,there is no doubt,it will also saves a large number of construction costs of network expansion of EPON for the telecom operator.The starndard of lOGbit/s Epon is IEEE802.3av,which is fucous on the study of physical layer technology,the standrad maximum following MPCP protocol in IEEE 802.3ah for EPON,which is of good inheritance.The core of the 802.3av standard has 2 points:firstly,expand the up-down bandwidth of 802.3ah standard,reaching 10G rate;secondly,10 GEPON is of good compatibility,the ONU of 10GEPON and the 1GEPON can coexist in one OLT,which can protect the vendors'investment maximumly.The technology and implementation of 10G EPON physical layer is studied in the paper,mainly focus on the design of 66/66 and FEC encode-decode circuit of EPON physical coding sublayer.Accroding to the standard of 10G EPON,the data width of physical encoding layer is 64bit,data rate 156.26Mb/s.In the first chapter,introduction,the domestic and abroad situation of background and develpment,trend is discribed;in the second chapster,the development process and the difference of the architecture of between the present and the previous is discussed;in the third chapter,the physical layer of EPON is presented in general;in the fourth chapter,the key technology,64/66B coding and the algorithm of FEC of 10G EPON is discussed;in the fifth chapter,the implementation of the physical layer of 10G EPON is elucidated;at last,the sixth chapter is a summary for the paper.