Scintillation effect on intensity modulated laser communication systems: a laboratory demonstration

Popoola, Wasiu Oyewole, Ghassemlooy, Zabih, Lee, Chung Ghiu and Boucouvalas, Anthony (2010) Scintillation effect on intensity modulated laser communication systems: a laboratory demonstration. Optics and Laser Technology, 42 (4). pp. 682-692. ISSN 0030-3992

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Official URL: http://dx.doi.org/10.1016/j.optlastec.2009.11.011

Abstract

This paper shows the impact of atmospheric turbulence-induced fading on the symbol decision position in the on-off keying (OOK) and the binary phase shift keying (BPSK) subcarrier intensity modulated (SIM) laser communication link. Weak turbulence is simulated in the laboratory using a chamber equipped with heating elements and fans. We have shown that in atmospheric turbulence, it is advantageous to employ modulation schemes such as pulse time and subcarrier intensity modulations that do not directly impress data on the optical irradiance as is the case with the OOK. For the OOK-modulated laser communication system, atmospheric turbulence imposes complexity on the symbol decision subsystem and by extension places a limit on the achievable bit error rate (BER) performance.

Item Type: Article
Uncontrolled Keywords: laser communications, atmospheric turbulence, free-space optics
Subjects: H900 Others in Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: EPrints Services
Date Deposited: 11 Mar 2010 15:00
Last Modified: 10 Aug 2015 11:25
URI: http://nrl.northumbria.ac.uk/id/eprint/2730

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