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An Offline Space Division Multiplexing Based Elastic Optical Network Model with Switching and Modulation Format Adaptation for Flexible Spectrum and Spatial Assignment

Sridhar Iyer

Abstract


Abstract: The Space Division Multiplexing (SDM) based Elastic Optical Networks (EONs) (SDM-bEONs) is the proposed solution to both, the required upgradation of the network’s capacity constrained by the non-linear Shannon’s limit and the provisioning needed for the future diverse Internet traffic’s required capacity. With SDM providing ‘space’ as an additional freedom degree, the assignment of resource (i.e., spectrum and space) in the SDM-b-EONs translates into the Routing, Modulation Format, Space, and Spectrum Assignment (RMFSPSA) problem. In the current work, initially, considering all the mandatory constraints, we investigate the effect of various fiber and switching solutions on the resource assignment issue within the SDM-b-EON. Next, based on the considered constraints, we formulate the novel RMFSPSA with Switching Adaptation (RMFSPSA-SwAd) integer linear program (ILP) model to serve the offline traffic demands. Further, in view of reasonable execution times, we also propose a two-step switching adaptive RMFSPSA (TS-SwAd-RMFSPSA) heuristic algorithm which is evaluated for various realistic fibers and switching solutions considering two novel ordering strategies. We evaluate the performance of the ILP model and the TSSwAd-RMFSPSA heuristic algorithm in terms of two new performance metrics, and execution times. Lastly, we also investigate the performance of the TS-SwAd-RMFSPSA heuristic algorithm under the online traffic case.

Keywords: Elastic optical networks, space division multiplexing, ILP, heuristic algorithm, RMFSPSA 

Cite this Article

Sridhar Iyer. An Offline Space Division Multiplexing Based Elastic Optical Network Model with Switching and Modulation Format Adaptation for Flexible Spectrum and Spatial Assignment. Trends in Opto-Electro & Optical Communications. 2019; 9(1): 1–23p. 


Keywords


Elastic optical networks, space division multiplexing, ILP, heuristic algorithm, RMFSPSA.

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DOI: https://doi.org/10.37591/toeoc.v9i1.2485

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