Regenerator Site Selection in Waveband Optical Networks Supporting Mixed Line Rates

We formulate the regenerator site selection problem as an integer linear program (ILP) and propose heuristics to solve the design problem in the context of waveband optical networks. We study the effect of the number of regenerator sites on the number of optical ports in waveband networks that support mixed line rates. Results demonstrate that increasing the number of regenerator sites reduces the electronic cost, however the optical switch port cost decreases initially and then remains the same with an increase in the number of regenerator sites.