Abstract
Orthogonal frequency-division multiplexing has emerged as a technology that can meet the requirements of diverse, bandwidth-intensive applications envisioned in future optical networks. In orthogonal frequency-division multiplexing optical networks, multiple subcarriers can be allocated to accommodate both subwavelength and superwavelength traffic. An important factor in the success of orthogonal frequency-division multiplexing is routing and spectrum allocation. In this paper, we propose two spectrum allocation algorithms for dynamic orthogonal frequency-division multiplexing optical-based networks: first-fit spectrum allocation starting from the spectrum boundary and spectrum partitioning. In spectrum partitioning, the spectrum is divided into multiple sectors, in which a subset of relative call type sizes compete for the subcarriers in opposite directions. We present simulation results to show the efficiency of our new algorithms.
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Alyatama, A. Dynamic spectrum allocation in orthogonal frequency-division multiplexing optical networks. J Engin Res 2, 16 (2014). https://doi.org/10.7603/s40632-014-0016-x
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DOI: https://doi.org/10.7603/s40632-014-0016-x