Performance analysis of heterodyne-detected OCDMA systems using PoLSK modulation over a free-space optical turbulence channel

Fan Bai, Yuwei Su, Takuro Sato

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    This paper presents a novel model of heterodyne-detected optical code-division multiple-access (OCDMA) systems employing polarization shift keying (PolSK) modulation over a free-space optical (FSO) turbulence channel. In this article, a new transceiver configuration and detailed analytical model for the proposed system are provided and discussed, taking into consideration the potential of heterodyne detection on mitigating the impact of turbulence-induced irradiance fluctuation on the performance of the proposed system under the gamma-gamma turbulence channel. Furthermore, we derived the closed-form expressions for the system error probability and outage probability, respectively. We determine the advantages of the proposed modeling by performing a comparison with a direct detection scheme obtained from an evaluation of link performance under the same environment conditions. The presented work also shows the most significant impact factor that degrades the performance of the proposed system and indicates that the proposed approach offers an optimum link performance compared to conventional cases.

    Original languageEnglish
    Pages (from-to)785-798
    Number of pages14
    JournalElectronics
    Volume4
    Issue number4
    DOIs
    Publication statusPublished - 2015 Oct 16

    Keywords

    • Free-space optical (FSO)
    • Gamma-gamma turbulence model
    • Heterodyne detection
    • Optical CDMA (OCDMA)
    • Polarization modulation

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Control and Systems Engineering
    • Computer Networks and Communications
    • Hardware and Architecture
    • Signal Processing

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