Title :
Diversity gain for near-field MISO atmospheric optical communications
Author :
Safari, Majid ; Hranilovic, Steve
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada
Abstract :
In this paper, the performance of a multiple-input/single-output (MISO) free-space optical (FSO) systems is studied through an analytical approach which more accurately models the atmospheric channel. The diversity gain is evaluated based on measures determined by up to second-order statistics of the received power. The numerical results demonstrate the effects of diffraction and spatial correlation of turbulence-induced fading on the performance of multi-beam diversity systems. These effects have been mostly neglected in the literature by applying far-field assumptions. Our results can thus be useful in the design of practical multi-beam FSO systems especially when a compact design is desired.
Keywords :
MIMO communication; light diffraction; optical communication; optical correlation; atmospheric channel; diffraction effect; diversity gain evaluation; far-field assumption; free-space optical system; multibeam FSO system; multibeam diversity system; multiple-input-single-output; near-field MISO atmospheric optical communication; second-order statistics; spatial correlation; turbulence-induced fading; Apertures; Diffraction; Diversity methods; Optical diffraction; Optical fiber communication; Optical receivers; Optical transmitters;
Conference_Titel :
Communications (ICC), 2012 IEEE International Conference on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4577-2052-9
Electronic_ISBN :
1550-3607
DOI :
10.1109/ICC.2012.6364140
