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Cooperative Diversity for Free-Space Optical Communications: Transceiver Design and Performance Analysis

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2 Author(s)
Abou-Rjeily, C. ; Dept. of Electr. & Comput. Eng., Lebanese American Univ. (LAU), Byblos, Lebanon ; Slim, A.

In this paper, we investigate the cooperative diversity technique as a candidate solution for combating turbulence-induced fading over Free-Space Optical (FSO) links. In particular, a one-relay cooperative diversity scheme is proposed and analyzed for non-coherent FSO communications with intensity modulation and direct detection (IM/DD). The error performance is derived in semi-analytical and closed-form expressions in the presence and absence of background radiation, respectively. Results show the enhanced diversity orders that can be achieved over both Rayleigh and lognormal fading models.

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Communications, IEEE Transactions on  (Volume:59 ,  Issue: 3 )