Title :
Sequential Optimization of Adaptive Arrays in Coherent Laser Communications
Author :
Belmonte, A. ; Kahn, Joseph M.
Author_Institution :
Dept. of Signal Theor. & Commun., Tech. Univ. of Catalonia, Barcelona, Spain
Abstract :
In optical wireless communications, a channel-matched adaptive coherent receiver may be implemented using an array of receive apertures. After atmospheric channel fading estimation, several replicas of a message received through the atmosphere are combined. As an alternative to training-based channel estimation, we analyze the performance of sequential techniques for direct optimization of multi-aperture array receivers in free-space coherent laser communications.
Keywords :
channel estimation; fading channels; light coherence; optical communication; optical receivers; adaptive arrays sequential optimization; atmospheric channel fading estimation; channel-matched adaptive coherent receiver; free-space coherent laser communications; multi-aperture array receivers; optical wireless communications; sequential techniques; training-based channel estimation; Adaptive optics; Fading; Optical amplifiers; Optical receivers; Optical variables control; Signal to noise ratio; Adaptive coherent array receivers; coherent communications; free-space optical communications; sequential channel matching;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2013.2250484
