Title :
Serial Relaying Over Gamma-Gamma MIMO FSO Links: Diversity Order and Aperture Allocation
Author :
Abou-Rjeily, Chadi ; Abdo, Alfred
Author_Institution :
Dept. of Electr. & Comput. Eng., Lebanese American Univ., Byblos, Lebanon
Abstract :
Serial relaying is analyzed in the context where the Free-Space Optical (FSO) communicating nodes are equipped with multiple apertures. We derive asymptotic expressions for the outage probability over the gamma-gamma fading channel and we evaluate the diversity orders that can be achieved by combining the multi-hop and multi-aperture techniques. A recursive algorithm that optimally allocates the apertures to the hops is also proposed. Results highlight the importance of aperture allocation for multi-hop-multi-aperture systems where significant performance improvements can be gained.
Keywords :
MIMO communication; diversity reception; fading channels; optical links; probability; relay networks (telecommunication); telecommunication network reliability; aperture allocation; diversity order; free-space optical communication; gamma-gamma MIMO FSO link; gamma-gamma fading channel; multihop multiaperture system; multiple input multiple output technique; outage probability; serial relaying; Apertures; Diversity reception; Encoding; MIMO; Optical fiber communication; Relays; Resource management; FSO; MIMO; diversity order; gamma-gamma; multi-hop; optimization; serial relaying;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2401563
