Regenerator allocation consists on selecting which of the already installed regenerators
in a translucent network may be used according to the dynamic traffic requests in order
to maximize the quality of the optical signal while minimizing the opaqueness of the
network. A recent study has shown that the performance of the regenerator allocation
techniques strongly depends on the accuracy of the physical-layer information. The
reason of this physical inaccuracy is the drift suffered by the physical-layer parameters
during the operation of the optical network. In these conditions, the performance of the
Impairment Aware-Routing and Wavelength Assignment (IA-RWA) process might drop
sharply when allocating regenerators inappropriately. In this paper, we propose new
regenerator allocation schemes taking into account the inherent and unavoidable
inaccuracy in the physical-layer informationPostprint (published version
