全光网中基于信号损伤限制的动态RWA算法

在全光网中,信号传输损伤会恶化动态光路连接的阻塞率性能,有必要在研究动态路由与波长分配RWA(routing and wavelength assignment)算法时考虑信号传输损伤的影响.介绍和阐述了全光网中的信号传输损伤及其对动态RWA算法性能的影响;结合已有的信号传输损伤模型提出了一种基于信号损伤限制的动态RWA算法,并对其性能进行了计算机仿真分析.仿真结果表明:该算法能有效地减小信号传输损伤对光网动态连接的阻塞率性能的影响,同时还具有较快的运算速度.

Dynamic RWA algorithm with signal impairment consideration in all-optical networks

In all-o pt ical netw o rks, the blocking per formance of dynamic netw or k connect io n may be notably deg raded due to sig nal impairment effect s. So it is essent ial to develop intelligent RWA algo rithms to combat the ef fect s of signal impairment . T he sig nal impairment problem and it s ef fects o n dy namic RWA algo rithm w ere discussed, and then a dy namic RWA alg orithm w ith signal impairment consider at ion w as pr opo sed. The performance of the alg orithm w as analyzed through computer simulat ion. T he result s show that the new algor ithm can reduce the ef fect s of signal impairment w ith acceptable running t ime.