MIMO Free-Space Optical Communication Employing Subcarrier Intensity Modulation in Atmospheric Turbulence Channels

Zabih Ghassemlooy*, Wasiu O. Popoola, Vahid Ahmadi, Erich Leitgeb

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel. Subcarrier modulation is employed to eliminate the need for adaptive threshold detector. Direct detection is employed at the receiver and each subcarrier is subsequently demodulated coherently. The effect of irradiance fading is mitigated with an array of lasers and photodetectors. The received signals are linearly combined using the optimal maximum ratio combining (MRC), the equal gain combining (EGC) and the selection combining (SelC). The bit error rate (BER) equations are derived considering additive white Gaussian noise and log normal intensity fluctuations. This work is part of the EU COST actions and EU projects.

Original languageEnglish
Title of host publicationCOMMUNICATIONS INFRASTRUCTURE: SYSTEMS AND APPLICATIONS IN EUROPE
EditorsR Mehmood, E Cerqueira, R Piesiewicz, Chlamtac
Place of PublicationNEW YORK
PublisherSpringer-Verlag
Pages61-73
Number of pages13
ISBN (Print)978-3-642-11283-6
Publication statusPublished - 2009
Event1st International ICST Conference on Communications Infrastructure, Systems and Applications in Europe - London, London, United Kingdom
Duration: 11 Aug 200913 Aug 2009

Publication series

NameLecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering
PublisherSPRINGER
Volume16
ISSN (Print)1867-8211

Conference

Conference1st International ICST Conference on Communications Infrastructure, Systems and Applications in Europe
Country/TerritoryUnited Kingdom
CityLondon
Period11/08/0913/08/09

Keywords

  • Atmospheric turbulence
  • BPSK
  • Free-space optics
  • Laser communications
  • MIMO systems
  • Subcarrier modulation
  • Spatial diversity
  • DIVERSITY

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