Spatial Diversity For FSO Communication Systems Over Correlated Atmospheric Turbulence Channels

Abstract : This paper investigates the bit error rate (BER) performance of spatial diversity free-space optical (FSO) com- munication systems using on-off keying modulation. The study considers correlated log-normal FSO channels as well as path losses due to weather effects using intensity modulation and direct detection schemes. An approximated moment generating functions (MGF) for the joint probability density function of correlated log-normal channels are considered. Using MGF approximation, BER expressions for repetition codes (RCs) and orthogonal space time block codes (OSTBCs) in correlated log- normal channels are derived. Results show that RCs outperform OSTBCs in correlated channel conditions. In addition, the effect of different weather conditions (e.g., haze, rain and fog) on the BER performance of the FSO links are studied. Monte Carlo simulation results are further provided to demonstrate the validity of the proposed mathematical analysis.
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Communication dans un congrès
X. IEEE WCNC 2014, Apr 2014, Istanbul, Turkey. X, pp.X, 2014, X. 〈10.1109/WCNC.2014.6952038〉
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Soumis le : jeudi 30 avril 2015 - 16:50:59
Dernière modification le : mardi 16 janvier 2018 - 15:54:20

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Mohamed Abaza, Mesleh Raed, Mansour Ali, El-Hadi Aggoune. Spatial Diversity For FSO Communication Systems Over Correlated Atmospheric Turbulence Channels. X. IEEE WCNC 2014, Apr 2014, Istanbul, Turkey. X, pp.X, 2014, X. 〈10.1109/WCNC.2014.6952038〉. 〈hal-01066003〉

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