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

Volume

19

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

553

Lastpage

556

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;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2015.2401563

Filename

7036051