Lasers, Fiber Optics, and Communications

Bit error rate analysis of free-space optical system with spatial diversity over strong atmospheric turbulence channel with pointing errors

[+] Author Affiliations
Prabu Krishnan

National Institute of Technology, Department of Electronics and Communication Engineering, Tiruchirappalli 620015, Tamil Nadu, India

D. Sriram Kumar

National Institute of Technology, Department of Electronics and Communication Engineering, Tiruchirappalli 620015, Tamil Nadu, India

Opt. Eng. 53(12), 126108 (Dec 15, 2014). doi:10.1117/1.OE.53.12.126108
History: Received September 13, 2014; Accepted November 7, 2014
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Abstract.  Free-space optical communication (FSO) is emerging as a captivating alternative to work out the hindrances in the connectivity problems. It can be used for transmitting signals over common lands and properties that the sender or receiver may not own. The performance of an FSO system depends on the random environmental conditions. The bit error rate (BER) performance of differential phase shift keying FSO system is investigated. A distributed strong atmospheric turbulence channel with pointing error is considered for the BER analysis. Here, the system models are developed for single-input, single-output–FSO (SISO-FSO) and single-input, multiple-output–FSO (SIMO-FSO) systems. The closed-form mathematical expressions are derived for the average BER with various combining schemes in terms of the Meijer’s G function.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Prabu Krishnan and D. Sriram Kumar
"Bit error rate analysis of free-space optical system with spatial diversity over strong atmospheric turbulence channel with pointing errors", Opt. Eng. 53(12), 126108 (Dec 15, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.126108


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