Free-space optical communication employing polarization shift keying coherent modulation in atmospheric turbulence channel

Xuan Tang, Wasiu Oyewole Popoola, Zabih Ghassemlooy, Chung Ghiu Lee, Erich Leitgeb, Vahid Ahmadi

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

18 Citations (Scopus)

Abstract

A binary polarization shift keying (2PolSK) scheme with a coherent heterodyne receiver for a free space optical (FSO) link through atmospheric turbulence channel is proposed and discussed. The maximum ratio combining (MRC) and equal gain combining (EGC) spatial diversity techniques have been applied to mitigate the turbulence induced irradiance fluctuation with bit error rate (BER) expressions derived for each. The communication channel is modelled as a gamma-gamma channel. The analysis of the 2PolSK characteristics is based on the error performance in turbulence regimes from weak to strong. Simulation results show that using the proposed system with MRC offers the best performance but at the cost of high system complexity.
Original languageEnglish
Title of host publicationProceedings of the 7th International Symposium on Communication Systems Networks and Digital Signal Processing (CSNDSP)
EditorsGuo Weisi, Ioannis Chatzigeorgiou, Ian J. Wassell, Rolando Carrasco
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages615-620
ISBN (Print)978-1424488582
Publication statusPublished - Sep 2010

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