1st International ICST Workshop on Cross-layer Algorithms and Protocols for Optical Networks

Research Article

Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks

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  • @INPROCEEDINGS{10.1007/978-3-642-30376-0_36,
        author={Konstantinos Christodoulopoulos},
        title={Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks},
        proceedings={1st International ICST Workshop on Cross-layer Algorithms and Protocols for Optical Networks},
        proceedings_a={CROSS-LAYER OPTIMIZATION},
        year={2012},
        month={10},
        keywords={Spectrum flexible networks Optical OFDM planning (offline) problem Routing Modulation Level and Spectrum Allocation},
        doi={10.1007/978-3-642-30376-0_36}
    }
    
  • Konstantinos Christodoulopoulos
    Year: 2012
    Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks
    CROSS-LAYER OPTIMIZATION
    Springer
    DOI: 10.1007/978-3-642-30376-0_36
Konstantinos Christodoulopoulos1,*
  • 1: University of Patras, and Research Academic Computer Technology Institute
*Contact email: kchristodou@ceid.upatras.gr

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) has recently been proposed as a modulation technique for optical networks, because of its good spectral efficiency, flexibility, and tolerance to impairments. We consider the planning problem of an OFDM optical network, where connections are provisioned for their requested rate by elastically allocating spectrum using a variable number of OFDM subcarriers and choosing an appropriate modulation level taking into account the transmission distance. Using algorithms developed in our previous works, we evaluate the spectrum utilization gains that can be obtained by utilizing the elastic bandwidth allocation of OFDM, when compared to a traditional WDM network.