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In this paper, we assessed the shared path protection scheme applied to translucent optical networks with sparse regeneration. We compared two routing algorithms described in the literature applied to find both for primary and backup lightpaths. We observed that the regeneration and wavelength conversion capabilities change the network dynamics. We compared the performance of the algorithms in terms...
In this paper we present a novel shared backup path protection algorithm for all-optical networks which considers physical layer impairments (PLI). The proposed algorithm searches for a link-disjoint backup lightpath that presents the higher optical signal-to-noise ratio (OSNR). The best-effort reliability approach is applied for searching the sharing backup paths. We used an analytical model to evaluate...
In this paper, we propose a novel algorithm to restore calls upon double-link failures in all-optical networks. Our proposal aims to restore all the lightpaths disrupted by each failure. The algorithm performs a path restoration looking for the route that presents the higher optical signal-to-noise ratio (OSNR). We compared our proposal to three other well known approaches in the literature. We observed...
In this paper we propose a novel algorithm to restore calls upon node failure in all-optical networks. Our proposal aims to restore the maximum of lightpaths disrupted by each node failure. The algorithm performs a path restoration looking for the route that presents the higher optical signal-to-noise ratio (OSNR). We compared our proposal to three other well known approaches in the literature. We...
In this paper we propose the use a multiobjective evolutionary optimization algorithm to solve the regenerators placement problem. The optical network performance and the capital costs are used as optimization objectives. The blocking probability is used as the network performance indicator, which is evaluated by network simulations with an impairment aware routing and wavelength assignment algorithm,...
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