The energy efficiency in telecommunication networks is gaining more relevance as the Internet traffic is growing. The introduction of OFDM and dynamic operation opens new horizons in the operation of optical networks, improving the network flexibility and its efficiency. In this paper, we compare the performance in terms of energy efficiency of a flexible-grid OFDM-based solution with a fixed-grid WDM network in a dynamic scenario with time-varying connections. We highlight the benefits that the bandwidth elasticity and the flexibility of selecting different modulation formats can offer compared to the rigidity of the conventional networks.
Communications (icc), Ieee International Conference on, 2012, p. 3009-3014
Elastic optical path network; Energy efficiency; Dynamic routing; Optical OFDM; Routing; Modulation Level and Spectrum Allocation
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I E E E International Conference on Communications
IEEE International Conference on Communications 2012