考虑串扰的多纤芯弹性光网络中的频谱分配算法  

Frequency Assignment Algorithm for Elastic Optical Network with Multi-Cores Considering Crosstalk

作　　者：江祥奎[1] 赵峰[1] 范永青[1] 张银良 

机构地区：[1]西安邮电大学自动化学院 [2]68306部队

出　　处：《激光与光电子学进展》2017年第6期68-75,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金青年基金(61305098);西安市科技局高校院所技术转移推进项目[CXY1516(6)]

摘　　要：研究了多纤芯弹性光网络中选路、纤芯分配和频谱分配问题。为最小化网络的最大占用频隙号,建立了一个使相邻纤芯之间的串扰率满足一定阈值要求的全局约束优化模型。为有效地求解该约束优化模型,设计了一种全局优化遗传算法。首先将疏导后的业务排序,然后利用设计的遗传算法为所有业务选择最优的路径和纤芯分配方案,从而使网络中占用的最大频隙号最小。为验证算法的有效性,在多个网络中进行了不同的仿真验证,仿真结果表明所设计的算法能够减小网络中最大占用频隙号,提高频谱利用率。This investigation focuses on the routing, core allocation and spectrum assignment problems in elastic optical network with multi-cores. To minimize the maximum index of used frequency slots, a global constraint optimization model with crosstalk rate of adjacent cores meeting certain threshold requirement is proposed. In order to solve the model efficiently, a global optimization genetic algorithm is proposed. The groomed connection requests are sorted, and the designed genetic algorithm is used to obtain the optimal schemes of routing and core allocation for all the connection requests. To evaluate the efficiency of the proposed algorithm, different simulations are conducted. The simulation results show that the proposed algorithm can reduce the maximum index of used frequency slot and improve spectrum efficiency.

关 键 词：光通信 多纤芯 遗传算法 纤芯分配 选路 

分 类 号：TN915.03[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]