TY - GEN
T1 - Outage performance analysis of underlay cognitive RF and FSO wireless channels
AU - Ansari, Imran Shafique
AU - Abdallah, Mohamed M.
AU - Alouini, Mohamed-Slim
AU - Qaraqe, Khalid A.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2014/9
Y1 - 2014/9
N2 - In this work, the outage performance analysis of a dual-hop transmission system composed of asymmetric radio frequency (RF) channel cascaded with a free-space optical (FSO) link is presented. For the RF link, an underlay cognitive network is considered where the secondary users share the spectrum with licensed primary users. Indoor femtocells act as a practical example for such networks. More specifically, it is assumed that the RF link applies power control to maintain the interference at the primary network below a predetermined threshold. While the RF channel is modeled by the Rayleigh fading distribution, the FSO link is modeled by a unified Gamma-Gamma turbulence distribution. The FSO link accounts for pointing errors and both types of detection techniques (i.e. heterodyne detection as well as intensity modulation/direct detection (IM/DD)). With this model, a new exact closed-form expression is derived for the outage probability of the end-To-end signal-To-noise ratio of these systems in terms of the Meijer's G function and the Fox's H functions under fixed amplify-and-forward relay scheme. All new analytical results are verified via computer-based Monte-Carlo simulations and are illustrated by some selected numerical results.
AB - In this work, the outage performance analysis of a dual-hop transmission system composed of asymmetric radio frequency (RF) channel cascaded with a free-space optical (FSO) link is presented. For the RF link, an underlay cognitive network is considered where the secondary users share the spectrum with licensed primary users. Indoor femtocells act as a practical example for such networks. More specifically, it is assumed that the RF link applies power control to maintain the interference at the primary network below a predetermined threshold. While the RF channel is modeled by the Rayleigh fading distribution, the FSO link is modeled by a unified Gamma-Gamma turbulence distribution. The FSO link accounts for pointing errors and both types of detection techniques (i.e. heterodyne detection as well as intensity modulation/direct detection (IM/DD)). With this model, a new exact closed-form expression is derived for the outage probability of the end-To-end signal-To-noise ratio of these systems in terms of the Meijer's G function and the Fox's H functions under fixed amplify-and-forward relay scheme. All new analytical results are verified via computer-based Monte-Carlo simulations and are illustrated by some selected numerical results.
UR - http://hdl.handle.net/10754/564985
UR - http://ieeexplore.ieee.org/document/6950766/
UR - http://www.scopus.com/inward/record.url?scp=84913527942&partnerID=8YFLogxK
U2 - 10.1109/IWOW.2014.6950766
DO - 10.1109/IWOW.2014.6950766
M3 - Conference contribution
SN - 9781479966769
SP - 6
EP - 10
BT - 2014 3rd International Workshop in Optical Wireless Communications (IWOW)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -