A novel partition-plane impairment aware routing and spectrum assignment algorithm in mixed line rates elastic optical networks

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• 作者：Jijun Zhao ; Wenyan Wang ; Wei Li ; Danping Ren ; Jinhua Hu…
• 关键词：Routing and spectrum assignment (RSA) ; Cross ; phase modulation (XPM) ; Spectrum constraints ; Mixed line rates ; Elastic optical networks
• 刊名：Photonic Network Communications
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：33
• 期：1
• 页码：11-18
• 全文大小：
• 刊物主题：Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1572-8188
• 卷排序：33

文摘

In mixed line rates elastic optical networks, different line rate signals can coexist on the same fiber. As different line rates coexist in the same fiber, the impairments, especially the cross-phase modulation (XPM), become more and more serious affecting the quality of transmission of signals. Moreover, the spectrum constraints limit the efficient allocation of spectrum resources. In this paper, we propose a novel spectrum Partition-topology Plane impairments aware routing and spectrum assignment algorithm to set up lightpaths for connection requests, therefore decreasing the XPM impairments and increasing spectrum utilization. The proposed algorithm can satisfy the spectrum constraints restriction and avoid the XPM impairment together. The simulation results show that the proposed algorithm can significantly improve the performance of networks in blocking probability and the spectrum efficiency.