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Sociedade Brasileira de Telecomunicações

Algorithms for Joint Optimization of Link Capacity and Regenerators Placement in Optical Networks

In this paper we compare two different approaches to tackle the regenerator placement and link capacity optimiza- tion joint problem in translucent optical networks. The former and simpler proposal imposes the same number of wavelengths to all links, whereas the number of wavelengths can be defined for each link in the second proposal. We used the SPEA2 algorithm to perform the multi-objective optimization process in both cases. We compared some of the solutions of the Pareto Fronts found by both proposals and we observed that the constrain on the number of wavelengths in the links leads to more expensive and/or less efficient solutions.

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