Extensive comparisons of optical fast-OFDM and conventional optical OFDM for local and access networks

E. Giacoumidis, Athanasios Tsokanos, C. Mouchos, G. Zardas, C. Alves, J. L. Wei, J. M. Tang, C. Gosset, Y. Jaouën, I. Tomkos

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


A performance comparison between a recently proposed novel technique known as fast orthogonal frequency-division multiplexing (FOFDM) and conventional orthogonal frequency-division multiplexing (OFDM) is undertaken over unamplified, intensity-modulated, and direct-detected directly modulated laser-based optical signals. Key transceiver parameters, such as the maximum achievable transmission capacity and the digital-to-analog/analog-to-digital converter (DAC/ADC) effects are explored thoroughly. It is shown that, similarly to conventional OFDM, the least complex and bandwidth efficient FOFDM can support up to 20 Gb/s over 500 m worst-case multimode fiber (MMF) links having 3 dB effective bandwidths of 200 MHz × km. For compensation of the DAC/ADC roll-off, a power-loading (PL) algorithm is adopted, leading to an FOFDM system improvement of 4 dB. FOFDM and conventional OFDM give similar optimum DAC/ADC parameters over 500 m worst-case MMF, while over 50 km single-mode fiber a maximum deviation of only 1 dB in clipping ratio is observed due to the imperfect chromatic dispersion compensation caused by one-tap equalizers.

Original languageEnglish
Article number6331133
Pages (from-to)724-733
Number of pages10
JournalJournal of Optical Communications and Networking
Issue number10
Publication statusPublished - 2012


  • Modulation
  • OFDM
  • Optical fiber communication


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