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

Tang, Xuan, Popoola, Wasiu Oyewole, Ghassemlooy, Zabih, Lee, Chung Ghiu, Leitgeb, Erich and Ahmadi, Vahid (2010) Free-space optical communication employing polarization shift keying coherent modulation in atmospheric turbulence channel. In: Proceedings of the 7th International Symposium on Communication Systems Networks and Digital Signal Processing (CSNDSP). IEEE, Piscataway, NJ, pp. 615-620. ISBN 978-1424488582

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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.

Item Type: Book Section
Additional Information: Presented at the 7th International Symposium on Communication Systems Networks and Digital Signal Processing (CSNDSP), held at Northumbria University, Newcastle upon Tyne from 21 - 23 July 2010.
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 08 Jun 2012 10:09
Last Modified: 10 Nov 2016 12:39
URI: http://nrl.northumbria.ac.uk/id/eprint/7572

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