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http://dx.doi.org/10.3807/JOSK.2015.19.5.437

Performance of All-Optical Multihop RoFSO Communication System over Gamma-Gamma Atmospheric Turbulence Channels  

Zong, Kang (Department of Wireless Communication Laboratory, College of Electronic Science and Engineering, National University of Defense Technology)
Zhu, Jiang (Department of Wireless Communication Laboratory, College of Electronic Science and Engineering, National University of Defense Technology)
Publication Information
Journal of the Optical Society of Korea / v.19, no.5, 2015 , pp. 437-443 More about this Journal
Abstract
In this paper, we analyze the performance of the all-optical multihop radio over a free space optical (RoFSO) communication system with amplify-and-forward (AF) relays under varying weather conditions. The proposed channel model considers the propagation loss, attenuation and atmospheric fading modeled by the Gamma-Gamma (GG) distribution. Both the amplified spontaneous emission (ASE) noise in the all-optical relays and the background noise projected onto receiver apertures have been considered in the analysis. The lower bound analytical expressions for the end-to-end bit error rate (BER) and outage probability are derived for the multihop system employing the all-optical relays with the full channel state information (CSI). Meanwhile, the exact results for BER and outage probability are obtained via Monte Carlo simulation. Results indicate the performance of the proposed system will be improved by the multihop transmission technology. For a fixed number of relays, the BER and outage probability will be increased with the deterioration of the weather conditions.
Keywords
All-optical relays; Radio over free-space optical communication; Atmospheric channel; Amplified spontaneous emission noise;
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