Title: Performance of sub-carrier modulated Free-Space Optical communication link in negative exponential atmospheric turbulence environment

Authors: W.O. Popoola, Z. Ghassemlooy, V. Ahmadi

Addresses: Optical Communications Research Group, NCR Lab, Northumbria University, Newcastle upon Tyne NE1 8ST, UK. ' Optical Communications Research Group, NCR Lab, Northumbria University, Newcastle upon Tyne NE1 8ST, UK. ' Department of Electrical Engineering, Tarbiat Modares University, PO Box 14115 143, 1463919111 Tehran, Iran

Abstract: Free-Space Optical (FSO) communication is reputed for its ability to proffer solution to the access network bottle-neck but when used over long range communication links, it suffers from scintillation caused by the atmospheric turbulence. The scintillation is modelled using the negative exponential distribution. Hereby, we present the outage probability and the bit error probability equations of digital sub-carrier intensity modulated FSO system in atmospheric turbulence.

Keywords: free-space optical communication; FSO communication; outage probability; phase shift keying; PSK; spatial diversity; sub-carrier modulation; atmospheric turbulence; bit error probability; network access.

DOI: 10.1504/IJAACS.2008.019809

International Journal of Autonomous and Adaptive Communications Systems, 2008 Vol.1 No.3, pp.342 - 355

Published online: 03 Aug 2008 *

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