摘要
光传送网OTN的规划与建设,是保证光传送网性能的重要环节,也是电网企业、设备商以及政府必须考虑的课题。文章主要探讨光传送网在不同调制方式下纠错前误码和信噪比之间的关系。通过积分法给出不同调制方式下纠错前错误码与信噪比之间的关系曲线,并找到纠错前误码为0.02时,三种调制方式的SNR容限由低到高分别是QPSK、8QAM、16QAM,他们的SNR容限点分别为4.896 9、10.835 1、18.682 1,即QPSK对噪声容忍程度最高。
The planning and construction of optical transmission network is an important link to ensure the performance of optical transmission network.It is also a subject that must be considered by power grid enterprises,equipment manufacturers and the government.This paper mainly discusses the relationship between error code before error correction and signal-to-noise ratio in optical transmission networks under different modulation modes.The relation curve between error code before error correction and SNR under different modulation modes is given by integration method.When the error code before error correction is 0.02,the SNR tolerance of the three modulation modes from low to high is QPSK,8QAM and 16QAM respectively.Their SNR tolerance points are 4.896 9,10.835 1 and 18.682 1 respectively,which means QPSK has the highest tolerance to noise.
作者
强梦烨
晏明昊
陆琴心
QIANG Mengye;YAN Minghao;LU Qinxin(Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co.,Ltd.,Wuxi 214061,China)
出处
《现代信息科技》
2022年第20期53-55,59,共4页
Modern Information Technology
关键词
光传送网规划
电力通信系统
信号调制方案
星座图
optical transmission network planning
power communication system
signal modulation scheme
constellation diagram
