OTN中OTU2到ODU2解映射电路设计与实现  

Design and implementation of demapping circuits from OTU2 to ODU2 in OTN

作　　者：邵瑞瑞 孟李林[1] 李小龙[1] 钟李全 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710061

出　　处：《光通信研究》2014年第3期15-17,20,共4页Study on Optical Communications

基　　金：陕西省"13115"科技创新工程重大科技专项基金资助项目(2009ZDKG-43);陕西省教育厅科学研究计划项目(2010JK840)

摘　　要：为了在解映射过程中尽量减少锁相环的使用,设计了一种基于同步时钟产生的均匀缺口时钟来实现解帧、去FEC(前向纠错)以及OTU2(光传输单元)解映射到ODU2(光数据单元)的同步电路。通过仿真和FPGA(现场可编程门阵列)验证了该电路功能的正确性。结果表明,该电路能够实时、准确地完成OTU2到ODU2的解映射。In order to reduce the use of PLL as much as possible in the process of demapping,this paper designs a sync circuit. On the basis of the uniform gaps in the clock produced by a sync clock,the sync circuit is used to realize deframing,de-FEC and demapping from OTU2 to ODU2.Simulation and FPGA test results verify the correctness of the circuit functions,indica-ting that this circuit can accomplish demapping from OTU2 to ODU2 in real-time and accurately.

关 键 词：缺口时钟 成帧器 异步映射 

分 类 号：TN929.11[电子电信—通信与信息系统]