Author
Ashrafzadeh, B., Soleimani-Nasab, E., Zaimbashi, A., Uysal, Murat
Publication Date
2020-12
Publication Place
-
IEEE
Subject
Double generalized gamma, Free space optical communications, Nakagami-m
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
2162-2337
Record ID
e1a39f01-33bc-4780-a783-610c0038cb69
Library Location
Electrical & Electronics Engineering
Date
2020-12
Notes
Iran National Science Foundation (INSF)
Sample Text
In mixed RF (radio frequency)-FSO (free space optical) systems, the FSO link is used for backhauling while RF is used for wireless access. In many practical deployment scenarios especially in urban environments, more than one FSO hop is required to avoid blockage and facilitate the line-of-sight connectivity. In this letter, we study the performance of a triple-hop RF-FSO-FSO link. We assume that the RF link is subject to Nakagami-m fading while FSO links are subject to double generalized Gamma (DGG) turbulence in addition to pointing errors. We first derive an exact closed-form expression for outage probability (OP) in terms of bivariate Fox-H function. Then, we carry out an asymptotical analysis to derive achievable diversity gains. We further present simulations to verify the accuracy of the derived expressions and investigate the effect of several system and channel parameters on the performance.
DOI
10.1109/LWC.2020.3014683
Cilt
9
