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Optimized regenerator allocation techniques select which of the already installed regenerators in a translucent network must be used in order to maximize the quality of the optical signal while minimizing the opaqueness of the network. Unfortunately, the performance of an optimized regenerator allocation strategy strongly depends on the accuracy of the physical-layer information. In this paper, the authors investigate the effects of optimized regenerator allocation techniques when the physical-layer information is inaccurate. According to the performed experiments, they conclude that mostly of the current techniques of regenerator usage optimization are only possible when perfect knowledge of physical information is available.
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