Performance Evaluation of Pilot-Assisted PAPR Reduction Technique in Optical OFDM Systems

Funmilayo B. Ogunkoya*, Wasiu O. Popoola, Ali Shahrabi, Sinan Sinanovic

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The pilot-assisted peak-to-average power ratio (PAPR) reduction technique proposed for optical orthogonal frequency division multiplexing (OFDM) communication systems is evaluated empirically and theoretically in this letter. The PAPR reduction is achieved by rotating the phase of data symbols with P iterations of randomly generated pilot symbol sequence. The results of our hardware implementation and analysis show a close agreement to that of computer simulations. In comparison with basic OFDM, where no PAPR reduction technique is implemented, experimental PAPR reduction gain of pilot-assisted OFDM at a complementary cumulative distribution function of 10(-3) with P = 5 is similar to 2 dB. This gain is similar to 0.2 dB less than that of analytical results. The experimental results also show that the pilot-assisted technique does not cause any significant deterioration of the bit error performance.

Original languageEnglish
Pages (from-to)1088-1091
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number10
Publication statusPublished - 15 May 2015


  • Optical OFDM
  • PAPR reduction
  • pilot symbol
  • indoor OWC
  • optical communications


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