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

Fan Bai*, Yuwei Su, Takuro Sato

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 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 (Switzerland)
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

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

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