DocumentCode :
1639023
Title :
On the performance of hybrid RF and RF/FSO dual-hop transmission systems
Author :
Ansari, Imran Shafique ; Yilmaz, Ferkan ; Alouini, Mohamed-Slim
Author_Institution :
Math. Sci. & Eng. (CEMSE) Div., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia
fYear :
2013
Firstpage :
45
Lastpage :
49
Abstract :
In this work, we present the performance analysis of a dual-branch transmission system composed of a direct radio frequency (RF) link and a dual-hop relay composed of asymmetric RF and free-space optical (FSO) links. The FSO link accounts for pointing errors and both types of detection techniques (i.e. intensity modulation/direct detection (IM/DD) as well as heterodyne detection). The performance is evaluated under the assumption of selection combining (SC) diversity scheme. RF links are modeled by Rayleigh fading distribution whereas the FSO link is modeled by a unified Gamma-Gamma fading distribution. Specifically, we derive new exact closed-form expressions for the cumulative distribution function, probability density function, moment generating function, and moments of the end-to-end signal-to-noise ratio of such systems in terms of the Meijer´s G function. We then capitalize on these results to offer new exact closed-form expressions for the outage probability, higher-order amount of fading, average error rate for binary and M-ary modulation schemes, and ergodic capacity, all in terms of Meijer´s G functions.
Keywords :
Rayleigh channels; heterodyne detection; intensity modulation; optical links; M-ary modulation schemes; Meijer´s G function; RF/FSO dual-hop transmission systems; Rayleigh fading distribution; closed-form expressions; cumulative distribution function; direct radiofrequency link; dual-branch transmission system; dual-hop relay; end-to-end signal-to-noise ratio; ergodic capacity; free-space optical links; gamma-gamma fading distribution; heterodyne detection; intensity modulation/direct detection; moment generating function; outage probability; probability density function; selection combining diversity scheme; Barium; Conferences; Three-dimensional displays; Wireless communication; Asymmetric dual-hop relay system; free-space optical (FSO) communications; optical wireless communications;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Optical Wireless Communications (IWOW), 2013 2nd International Workshop on
Conference_Location :
Newcastle upon Tyne
Type :
conf
DOI :
10.1109/IWOW.2013.6777774
Filename :
6777774
Link To Document :
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