Title :
DMT analysis of multi-hop coherent FSO communication over atmospheric channels
Author :
Aghajanzadeh, Sahar Molla ; Uysal, Murat
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
In this paper, we investigate the diversity-multiplexing tradeoff (DMT) of a multi-hop coherent free-space optical (FSO) system over atmospheric channels. We consider a relay-assisted FSO system with decode-and-forward relay nodes and multiple heterodyne receivers with modal compensation. Based on a recently introduced statistical characterization for the combined effects of turbulence-induced amplitude fluctuations and phase aberrations, we quantify the potential performance improvements through the derivation of DMT. Our results demonstrate significant performance gains that can be achieved by multi-hop transmission in coherent FSO systems.
Keywords :
decode and forward communication; multiplexing; optical communication; optical receivers; relays; DMT analysis; atmospheric channel; decode-and-forward relay node; diversity-multiplexing tradeoff; free-space optical system; modal compensation; multihop coherent FSO communication; multiple heterodyne receiver; phase aberration; relay-assisted FSO system; turbulence-induced amplitude fluctuation; Apertures; Diversity methods; Fading; Multiplexing; Optical receivers; Relays; Signal to noise ratio;
Conference_Titel :
Information Theory (CWIT), 2011 12th Canadian Workshop on
Conference_Location :
Kelowna, BC
Print_ISBN :
978-1-4577-0743-8
DOI :
10.1109/CWIT.2011.5872136
