Abstract:
In this work, 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 noncoherent
FSO communications with intensity modulation and direct detection (IM/DD).
The error performance of this diversity scheme is derived in semi-analytical and closedform
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.
