Evaluating M-ary PSK multiple-subcarrier modulation over FSO links using aperture averaging

A. Ben Bekkali*, C. Naila, K. Kazaura, K. Wakamori, M. Matsumoto

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In this paper, we propose a Free-Space Optical (FSO) system model based on multiple subcarrier modulation (MSM) using M-ary Phase Shift Keying (M-ary PSK) scheme over Intensity Modulation Direct Detection optical link. We investigate the impact of aperture averaging on our model across weak-to-strong turbulence regimes taking into consideration the intermodulation distortion term due to the laser diode non-linearity. By using a modified model for aperture averaging technique, we also show that there is a design tradeoff between the receiver lens aperture and the required average Carrier-to-Noise and Distortion Ratio to achieve a given average bit error rate, ensuring substantial scintillation fade reduction.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2010
EventFree-Space Laser Communications X - San Diego, CA
Duration: 2010 Aug 22010 Aug 3


OtherFree-Space Laser Communications X
CitySan Diego, CA


  • Aperture averaging
  • Free-space optics (FSO)
  • M-ary phase shift keying (M-ary PSK)
  • Multiple subcarrier modulation (MSM)

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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