全光网络中感知信号损伤的RWA算法  

Signal Impairment-aware RWA Algorithm in All-Optical Network

作　　者：杜志璟[1] 侯韶华[1] 

机构地区：[1]南京邮电大学,南京210003

出　　处：《现代传输》2007年第1期74-76,共3页Modern Transmission

摘　　要：在全光网络中,信号沿着光通路在非理想介质中传输时,会引起质量恶化。当达到一定程度时,该光通路不可用,物理层的传输损伤引起连接阻塞。为了提供高质量的连接,路由和波长分配算法需要考虑信号质量。光信噪比和极化模式色散被认为是主要的限制因素。有两种感知损伤的RWA算法:最优路径算法,最先符合算法。In all-optical network, the signal degradation occurs during transmission in non-ideal medium along a lightpath. When the signal degradation reaches a certain level, the lightpath is not usable and is blocked due to transmission impairment in the physical layer. To provide high quality connection, the quality of signal should be taken into consideration. Optical signal-to-noise ratio and polarization mode dispersion are considered to be the most important constraints. There are two impairment-aware RWA algorithms： the best-path algorithm and the first-fit algorithm

关 键 词：全光网络 信号质量 比特错误率 RWA算法 

分 类 号：TN929.1[电子电信—通信与信息系统]