摘要
随着传输速率的不断升级,在透明传送过程中,各种损伤的积累会对光信号的质量造成严重影响,因而不能保证高QoS(服务质量)地传输信号。文章提出一种物理损伤感知的分布式RWA(波长路由分配)算法,将物理层传输质量评估分布在中继段路由和波长信道中,分别由损伤感知路由、波长通道传输质量排序和按优先级分配3部分构成。仿真实例证明了该算法的有效性。
With the constant escalation of transmission rate,the quality of optical signals will be seriously affected owing to the accumulation of various impairments in the course of transparent transmissions,so that the signals cannot be transmitted with high QoS.In this paper,a distributed physical impairment-aware RWA algorithm is presented,which is composed of three parts,the impairment-aware routing,transmission quality sorting and allocation by priority.In this algorithm,the transmission quality evaluation in the physical layer is distributed in the hop routing and wavelength channels.Simulation results verify the effectiveness of this algorithm.
出处
《光通信研究》
北大核心
2011年第6期8-10,59,共4页
Study on Optical Communications
基金
国家自然科学基金资助项目(60702056)
