摘要
针对云计算下光纤通信数据链路层信道选取中受到信道衰落和干扰的影响,导致链路层输出比特序列失真的问题,进行信道选取模型优化设计,提出一种基于决策指向性信道估计的云计算光纤通信数据链路层信道选取模型。首先构建云计算下光纤通信数据链路层路由节点分布和信道模型,进行数据链路层的传输数据训练的信号拟合。然后采用自适应均衡技术进行链路层信道均衡设计,克服信道衰落的影响,构造指向性信道估计目标函数并进行决策寻优,实现信道优化选取。最后进行光纤通信实际性能测试,得到采用该信道选取模型进行光纤通信的比特序列输出保真性较好,抗干扰性较强。
For the influences on optical fiber communication channel selection in data link layer caused by channel fading and interference in cloud computing,there are distortion problem of output bit sequence in link layer. In order to design optimal channel selection model,put forward a cloud optical fiber communication data link layer channel selection model based on decision directed channel estimation. Firstly,the node distribution and channel model of optical fiber communication data link layer are constructed,and the data fitting of the data link layer is trained. Then,the adaptive equalization technology is used to design the link layer channel equalization,to overcome the influence of channel fading,to construct the directional channel estimation target function and to realize the decision optimization. Finally,the actual performance of the optical fiber communication test verified that this model has good fidelity of output bit sequence and strong anti-interference ability.
出处
《激光杂志》
北大核心
2018年第2期135-138,共4页
Laser Journal
基金
武汉市教育局项目(No.2015113)
关键词
云计算
光纤通信
链路层
信道
cloud computing
optical f/ber communication
link layer
channel
