Title :
On the Optimality of the Selection Transmit Diversity for MIMO-FSO Links with Feedback
Author :
Abou-Rjeily, Chadi
Author_Institution :
Dept. of Electr. & Comput. Eng., Lebanese American Univ. (LAU), Byblos, Lebanon
fDate :
6/1/2011 12:00:00 AM
Abstract :
We propose an optimal power allocation strategy for Multiple-Input-Multiple-Output (MIMO) Free-Space Optical (FSO) links with Intensity Modulation (IM) and Direct Detection (DD). The optimization is performed for shot noise limited systems in the presence of complete feedback. The derived analytical solution turns out to be the same as the selection transmit diversity scheme proposed for MISO-FSO systems corrupted by Gaussian noise. We also propose and analyze a novel transmission strategy for the limited-feedback case.
Keywords :
Gaussian noise; MIMO communication; channel allocation; diversity reception; feedback; intensity modulation; optical links; optimisation; shot noise; FSO links; Gaussian noise; MIMO; direct detection; free space optical links; intensity modulation; limited feedback; multiple input multiple output; optimal power allocation; optimization; shot noise limited systems; transmit diversity; AWGN; Adaptive optics; Fading; MIMO; Optical feedback; Optical transmitters; Free-space optics; atmospheric turbulence; power allocation; transmit diversity;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.041411.110312
