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An optimal and a heuristic algorithm for solving the route and spectrum allocation problem in OFDM networks

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Abstract

Orthogonal frequency division multiplexing (OFDM) has recently emerged as a promising technology. A network using OFDM- based spectrum-sliced elastic optical path (SLICE) has a higher spectrum efficiency, due to the fine granularity of subcarrier frequencies used. To minimize the utilized spectrum in SLICE networks, the routing and spectrum allocation problem (RSA) has to be efficiently solved. We have solved the RSA problem using a mixed integer linear programming formulation and have compared our approaches with another recent formulation.

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Notes

  1. We were limited to networks with 15 or fewer nodes since, for larger networks, the formulations often fail to converge, within a reasonable time.

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Correspondence to Subir Bandyopadhyay.

Additional information

This research was supported by discovery grants from the Natural Sciences and Engineering Research Councils of Canada to S. Bandyopadhyay and to Y. P. Aneja.

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Paul, A., Rahman, Q., Bandyopadhyay, S. et al. An optimal and a heuristic algorithm for solving the route and spectrum allocation problem in OFDM networks. Photon Netw Commun 30, 280–289 (2015). https://doi.org/10.1007/s11107-015-0516-0

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  • DOI: https://doi.org/10.1007/s11107-015-0516-0

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