Author
Ashrafzadeh, B., Soleimani-Nasab, E., Kamandar, M., Uysal, Murat
Publication Date
2019-07
Publication Place
-
IEEE
Subject
Free space optical (FSO) communications, Double generalized Gamma (DGG), Extended generalized-K (EGK), Pointing errors, Relaying
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0090-6778
Record ID
686338bb-af38-454c-965e-e1c2a34eb4ba
Library Location
Electrical & Electronics Engineering
Date
2019-07
Sample Text
Free space optical (FSO) communication systems provide line-of-sight wireless connectivity in the unlicensed optical spectrum and achieve higher data rates in comparison to their radio frequency (RF) counterparts. FSO systems are particularly attractive for the last mile access problem by establishing a connectivity bridge between optical fiber-based backbone and RF access networks. To address this practical deployment scenario, there has been an increasing attention on the so-called mixed (dual-hop) FSO-RF systems where FSO transmission is utilized at one hop followed by RF transmission at the other one. In this paper, we investigate the performance of mixed FSO-RF transmission systems where the FSO link is modeled by the double generalized Gamma distribution with generalized pointing error impairments and the RF link experiences the extended generalized-K shadowed fading. For both amplify-and-forward and decode-and-forward relaying, we derive closed-form expressions for outage probability, bit error probability, and ergodic capacity in terms of bivariate Fox-H function. Monte Carlo simulation results are provided to verify the accuracy of derived expressions. We further provide an asymptotic analysis and discuss the achievable diversity orders of mixed FSO-RF systems.
DOI
10.1109/TCOMM.2019.2904501
Cilt
67
