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

Author

Abou-Rjeily, Chadi ; Slim, Ahmad

Author_Institution

Dept. of Electr. & Comput. Eng., Lebanese American Univ. (LAU), Byblos, Lebanon

Volume

59

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

658

Lastpage

663

Abstract

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.

Keywords

Rayleigh channels; cooperative communication; diversity reception; optical links; optical transceivers; Rayleigh fading model; cooperative diversity; direct detection; error performance; free space optical communication; free space optical link; intensity modulation; lognormal fading model; performance analysis; transceiver design; turbulence induced fading; Free-space optics; atmospheric turbulence; cooperative diversity; spatial diversity;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2011.121410.100032

Filename

5671563