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In this paper, we investigate power-efficient directed preconfigured cycles ($p$-Cycles) for asymmetric traffic protection in elastic optical networks (EONs) against single link failure. Owing to the advantage of distinguishing traffic amount in two directions, directed $p$-cycles consume low power by allocating different spectrum slots and modulation formats for each direction. A mixed integer linear...
This paper studies energy-efficient protection for asymmetric traffic in Elastic Optical Networks (EONs). Directed pre-configured Cycles (p-Cycles) are designed to protect directional traffic with flexible spectrum allocation and adaptive modulation formats. A Mixed Integer Linear Programming (MILP) model is formulated to minimize total energy consumption while generating directed p-cycles without...
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