Abstract
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.
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Acknowledgments
This research was jointly supported by the National Natural Science Foundation of China (61402147 ), by the Natural Science Foundation of Hebei Province (NO. F2014402075), by the Science Research Project Program of Hebei Education Department (No. QN20131064), and by the Science and Technology Research and Development Program of Hebei Province Funded Project (No. 1421103054-6).
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Zhao, J., Wang, W., Li, W. et al. A novel partition-plane impairment aware routing and spectrum assignment algorithm in mixed line rates elastic optical networks. Photon Netw Commun 33, 11–18 (2017). https://doi.org/10.1007/s11107-015-0601-4
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DOI: https://doi.org/10.1007/s11107-015-0601-4