BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle

Wasiu O. Popoola, Zabih Ghassemlooy, Erich Leitgeb

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment. To mitigate the scintillation effect, the selection combining spatial diversity scheme (SelC) is employed at the receiver. Bit error rate (BER) and outage probability (Pout) analysis are presented with and without the SelC spatial diversity. It is shown that at a BER of 10-6, a maximum diversity gain 25 dB is predicted. And about 60 dBm signal power is required to achieve an outage probability of 10-6, based on a threshold BER of 10-4.

Original languageEnglish
Pages (from-to)546-554
Number of pages9
JournalJournal of Communications
Volume4
Issue number8
DOIs
Publication statusPublished - 1 Sep 2009

Keywords

  • DPSK
  • Free-space optics
  • Negative exponential distribution
  • Outage probability
  • Spatial diversity
  • Turbulence

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