Performance analysis of space time block coding techniques for indoor optical wireless systems
IEEE Journal on Selected Areas in Communications - Special issue on optical wireless communications
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
EM-based maximum-likelihood sequence detection for MIMO optical wireless systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Alamouti coding for indoor optical wireless communications using ACO-OFDM
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
On space-time coding for free-space optical systems
IEEE Transactions on Communications
Rateless coding for hybrid free-space optical and radio-frequency communication
IEEE Transactions on Wireless Communications
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In this letter, the authors investigate spatial diversity techniques for free-space optical (FSO) links with intensity modulation and direct detection (IM/DD) over log-normal atmospheric turbulence-induced fading channels. We restrict our attention to the deployment of orthogonal space-time block codes (OSTBCs) and repetition codes both of which have been recently proposed for FSO links. Our performance analysis demonstrates that, although both schemes are able to extract full diversity, repetition codes outperform OSTBCs. The performance gap increases with the increasing number of transmit apertures. Our findings clearly point out that deployment of OSTBCs is not necessary for a FSO IM/DD link.