Bit error rate estimation methods for QPSK CO-OFDM transmission

Son Thai Le, Keith J. Blow, Vladimir K. Mezentsev, Sergei K. Turitsyn

Research output: Contribution to journalArticlepeer-review


Coherent optical orthogonal frequency division multiplexing (CO-OFDM) is an attractive transmission technique to virtually eliminate intersymbol interference caused by chromatic dispersion and polarization-mode dispersion. Design, development, and operation of CO-OFDM systems require simple, efficient, and reliable methods of their performance evaluation. In this paper, we demonstrate an accurate bit error rate estimation method for QPSK CO-OFDM transmission based on the probability density function of the received QPSK symbols. By comparing with other known approaches, including data-aided and nondata-aided error vector magnitude, we show that the proposed method offers the most accurate estimate of the system performance for both single channel and wavelength division multiplexing QPSK CO-OFDM transmission systems.

Original languageEnglish
Pages (from-to)2951-2959
Number of pages9
JournalJournal of Lightwave Technology
Issue number17
Early online date30 Jun 2014
Publication statusPublished - 1 Sept 2014

Bibliographical note

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Funding: EPSRC Program Grant UNLOC (EP/J017582/1)


  • bit error rate
  • coherent detection
  • coherent optical transmission
  • orthogonal frequency division multiplexing
  • BER


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