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 journalArticle

    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 - Sep 2009

    Keywords

    • free-space optics
    • spatial diversity
    • outage probability

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