摘要
在弹性光网络中,光树传输组播可以节省链路代价,但较长的光树需要选择更低的调制等级,消耗更多的频谱资源和发射机功耗。因此,针对弹性光网络在链路失配下的传输链路容易受到多径效应的影响导致链路均衡性不好,产生传输信息误差,提出一种基于误差反馈调节均衡和误码自适应调制技术的弹性光网络数据传输误差补偿算法,构建弹性光网络传输信道模型,采用转发负载均衡控制方法进行链路失配的稳定性控制,在链路失配下对弹性光网络的传输数据进行码间干扰抑制,结合链路均衡控制模型进行自相关匹配调节,采用信道扩频和误码自适应调制技术进行信道补偿和均衡设计,实现传输数据的误差补偿,提高信道均衡性。仿真结果表明,采用该方法进行弹性光网络传输误差补偿的均衡性较好,误码率为0,弹性光网络传输信息耗时2.5 s,时间开销最小,提高了弹性光网络传输的自适应均衡控制能力。
In an elastic optical network,optical tree transmission multicast can save link cost,but a longer optical tree needs to select a lower modulation level to consume more spectrum resources and transmitter power consumption.Therefore,the transmission link of elastic optical network under link mismatch is easily affected by multipath effect which leads to poor link balance and transmission information error.The elastic optical network data transmission error compensation algorithm based on error feedback adjustment equalization and error adaptive modulation technique is proposed.The elastic optical network transmission channel model is constructed,the forwarding load balancing control method is used to control the stability of link mismatch,and inter-code interference suppression on the transmission data of the elastic optical network under the link mismatch is performed.Combining with the link balance control model for auto-correlation matching adjustment,adapting channel spread and error modulation technology for channel compensation and equalization design to achieve error compensation of transmitted data and to improve channel equalization.The simulation results show that the equalization of transmission error compensation in elastic optical network is good,the error rate is 0,the transmission time of elastic optical networks is 2.5 s,and the time overhead is the minimum,which improve the adaptive equalization control ability of elastic optical network.
作者
顾理军
王中叶
GU Lijun;WANG Zhongye(Jiangsu Internet of Things and Manufacturing Information Engineering Technology Research and Derelopment Center,Jiangsu 213000,China;Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《激光杂志》
北大核心
2020年第7期148-152,共5页
Laser Journal
基金
国家自然科学基金面上项目(No.61573181)
常州市工业互联网数据智能技术重点实验室资助(No.CM20183002)。
关键词
弹性光网络
传输信息
误差补偿
信道均衡
elastic optical network
transmitted information
error compensation
channel equalization
