Bit error rate analysis of MISO FSO systems

Muhsin Caner Gökçe, Yahya Baykal, Murat Uysal

Research output: Contribution to journalArticlepeer-review


Multiple-input single-output (MISO) systems are employed in free space optical (FSO) links to mitigate the degrading effects of atmospheric turbulence. In this paper, we consider a MISO FSO system with practical transmitter and receiver configuration that consists of radial laser array with Gaussian beams and a Gaussian receiver aperture function. We have employed our previously derived formulation of the power scintillation in which Huygens–Fresnel principle was employed. Therefore, we choose system parameters within the range of validity of the wave structure functions. Using the on-off keying modulation and the log-normal probability distribution function, we quantify the average bit error rate (〈BER〉) of laser array beams in weak turbulence. It is observed that the radial array beams at the transmitter are more advantageous than the single Gaussian beam. However, increasing the number of array beamlets to more than three seems to have negligible effects on 〈BER〉 . It is further observed that 〈BER〉 decreases when the source size, the ring radius and the receiver aperture radius increase.

Original languageEnglish (US)
Pages (from-to)642-649
Number of pages8
JournalWaves in Random and Complex Media
Issue number4
StatePublished - Oct 1 2016

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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