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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 2 — Jan. 15, 2013
  • pp: 208–210

Formula for the average bit error rate of free-space optical systems with dual-branch equal-gain combining over gamma–gamma turbulence channels

Xiang Yi, Zengji Liu, and Peng Yue  »View Author Affiliations


Optics Letters, Vol. 38, Issue 2, pp. 208-210 (2013)
http://dx.doi.org/10.1364/OL.38.000208


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Abstract

In this Letter we propose a closed-form expression for the average bit error rate of intensity modulation/direct detection free-space optical systems employing dual-branch equal-gain combining and operating over turbulence channels. To offer a realistic error performance of the considered system we assume that both branches undergo independent but not necessarily identically distributed gamma–gamma fading. Our newly developed formula is obtained in terms of the bivariate H-Fox function, which can be readily evaluated based on its two-fold Mellin–Barnes representation. Numerically evaluated and computer simulation results are presented that verify the accuracy of the proposed mathematical analysis.

© 2013 Optical Society of America

OCIS Codes
(010.7060) Atmospheric and oceanic optics : Turbulence
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: October 31, 2012
Revised Manuscript: December 14, 2012
Manuscript Accepted: December 14, 2012
Published: January 14, 2013

Citation
Xiang Yi, Zengji Liu, and Peng Yue, "Formula for the average bit error rate of free-space optical systems with dual-branch equal-gain combining over gamma–gamma turbulence channels," Opt. Lett. 38, 208-210 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-2-208


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