Elastic Bandwidth Allocation in Flexible OFDM-Based Optical Networks

(Invited Paper)
  • Konstantinos Christodoulopoulos
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 66)


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.


Spectrum flexible networks Optical OFDM planning (offline) problem Routing Modulation Level and Spectrum Allocation 


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Copyright information

© ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering 2012

Authors and Affiliations

  • Konstantinos Christodoulopoulos
    • 1
  1. 1.Computer Engineering and Informatics DepartmentUniversity of Patras, and Research Academic Computer Technology InstitutePatraGreece

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