光传送网中ODU1到ODU0的解映射电路的设计与实现  

Design and Implementation of Demapping Circuit from ODU1 to ODU0 in Optical Transport Network

作　　者：韩美林 乔成芳 HAN Meilin;QIAO Chengfang(School of Electronic Information and Electrical Engineering,Shangluo College,Shangluo 726000)

机构地区：[1]商洛学院电子信息与电气工程学院,商洛726000

出　　处：《计算机与数字工程》2018年第7期1464-1467,共4页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:21703135);商洛市科学技术研究发展计划项目(编号:SK2017-42)资助

摘　　要：随着宽带数据业务的大力驱动和OTN技术的日益成熟,采用OTN技术构建更为高效和可靠的传送网是OTN技术必然的发展结果^([1])。论文主要完成的是将成帧后的一路16位ODU1信号通过异步映射方式去映射为两路8位的ODU0信号供下级电路处理^([2])。最后经仿真表明,该设计能够实时、准确地完成ODU1到ODU0的数据传输,大大减少了锁相环的使用,时钟抖动也较少。This paper mainly completes the process of mapping the 16-bit ODU1 signal after framed into two 8-bit ODU0 signals by asynchronous mapping.All functions of the mapping are completed according to the requirements of the G709 protocol,including slot splitting,overhead extraction,judgment release of adjustment bytes,rate adjustment,PT,MSI judgment,and the like.Finally,the simulation shows that the design can complete the data transmission from ODU1 to ODU0 in real time and accurately,which greatly reduces the use of phase-locked loops and less jitter.

关 键 词：光传送网 缺口时钟 异步映射 

分 类 号：TN915[电子电信—通信与信息系统]