Evaluation of core-continuity-constrained ROADMs for flex-grid/MCF optical networks
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Cita com:
hdl:2117/112355
Tipus de documentArticle
Data publicació2017-11-01
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés obert
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Abstract
To effectively keep pace with the global IP traffic growth forecasted in the years to come, flex-grid over multi-core fiber (MCF) networks can bring superior spectrum utilization flexibility, as well as bandwidth scalability far beyond the non-linear Shannon’s limit. In such a network scenario, however, full node switching re-configurability will require enormous node complexity, pushing the limits of current optical device technologies with prohibitive capital expenditures. Therefore, cost-effective node solutions will most probably be the key enablers of flex-grid/MCF networks, at least in the short- and mid-term future. In this context, this paper proposes a cost-effective reconfigurable optical add/drop multiplexer (ROADM) architecture for flex-grid/MCF networks, called CCC-ROADM, which reduces technological requirements (and associated costs) in exchange for demanding core continuity along the end-to-end communication. To assess the performance of the proposed CCC-ROADM in comparison with a fully flexible ROADM (i.e., a fully non-blocking ROADM, called FNB-ROADM in this work) in large-scale network scenarios, a novel lightweight heuristic to solve the route, modulation, core, and spectrum assignment problem in flex-grid/MCF networks is presented in this work, whose goodness is successfully validated against optimal ILP formulations previously proposed for the same goal. The obtained numerical results in a significant number of representative network topologies with different MCF configurations of 7, 12, and 19 cores show almost identical network performance in terms of maximum network throughput when deploying CCC-ROADMs versus FNB-ROADMs, while decreasing network capital expenditures to a large extent.
CitacióMoreno, F.J., Rumipamba, R., Pavón, P., Perelló, J., Gene, J. M., Spadaro, S. Evaluation of core-continuity-constrained ROADMs for flex-grid/MCF optical networks. "Journal of optical communications and networking", 1 Novembre 2017, vol. 9, núm. 11, p. 1041-1050.
ISSN1943-0620
Versió de l'editorhttps://www.osapublishing.org/jocn/abstract.cfm?uri=jocn-9-11-1041
Col·leccions
- Departament d'Arquitectura de Computadors - Articles de revista [1.046]
- Departament de Teoria del Senyal i Comunicacions - Articles de revista [2.494]
- GCO - Grup de Comunicacions Òptiques - Articles de revista [236]
- CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla - Articles de revista [154]
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JOCN_MCF_UPC_UPCT_R1.pdf | 713,1Kb | Visualitza/Obre |