The problem of regenerator assignment (RA) in translucent optical networks consists in segmenting a lightpath into several transparent segments, each of which linked by 3 R regenerators. In this article, we present two heuristics and compare their effectiveness with an exhaustive method to solve the RA problem in translucent elastic optical networks under dynamic traffic. The exhaustive method is capable of finding solutions that are able to minimize, simultaneously, the number of regenerators and frequency slots used in a given route. It is assumed 3 R regenerators, which are capable to perform both modulation format and spectrum conversion. In our simulations, we consider the amplified spontaneous emission noise generated by optical amplifiers as physical impairment. Two practical mesh topologies have been analyzed in terms of call request blocking probability. The results show that the presented heuristics are able to find solutions that provide very similar performance to those found by utilizing the best solutions of the exhaustive method.

中文翻译：

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动态半透明弹性光网络中新型再生器分配策略的评估

半透明光网络中的再生器分配（RA）问题在于将光路分割为几个透明段，每个段由3个R再生器链接。在本文中，我们介绍了两种启发式方法，并将它们的有效性与穷举方法进行比较，以解决动态流量下的半透明弹性光网络中的RA问题。详尽的方法能够找到能够同时最小化给定路线中使用的再生器和频率槽数量的解决方案。假设有3个R再生器，它们能够执行调制格式和频谱转换。在我们的仿真中，我们将光放大器产生的放大的自发发射噪声视为物理损伤。已经根据呼叫请求阻塞概率分析了两种实用的网格拓扑。结果表明，所提出的启发式方法能够找到与使用穷举方法的最佳解决方案所提供的性能非常相似的解决方案。