光网络中基于误码率感知RWA算法性能研究

A Performance Study of Optical Network based Bit Error Rate-Aware RWA Algorithm

本文将光信噪比模型通过Q值转化成接收端的光信号的误码率。再对误码率加以门限值来判断所选择的光路是否满足业务连接需求。从而有效地避免了在光透明网络中接收端因误码率过高而造成的通信阻塞。仿真结果表明,再加入误码率评估模块后基于分层图的RWA算法在非理想的网络中阻塞率同样有较好的表现。

Take the advantage of Q value, this article converts the OSNR model into the bit error rate of the receiving part. Then the receiving end to be the threshold value to determine whether the selected optical path to satisfy the demand for service connection. Thus effectively avoid the receiving end in the light transparent network communication obstruction caused due to the error rate is too high. The simulation results show that the blocking rate, then add the bit error rate to determine the conditions of the RWA algorithm in a non-ideal network also has a better performance.