The Bridge - Issue 3, 2021 - 30

Feature
Facilitating Satellite-Airborne-Balloon-Terrestrial
Integration for Dynamic and Infrastructure-less Networks
To illustrate the FSO/RF back-hauling bottleneck effects,
Figure 5 illustrates the average downlink throughput
as a function of HAPs peak transmit power. It can be
seen that as the downlink data rate increases as HAPs'
peak transmit power rises up to a certain value. This
is because, by starting from this value, the average
downlink throughput cannot be improved. This is due
to the limitation of the back-hauling link from HAPs to
gateways or HAPs to satellite links. Further, it can be
seen that the average downlink throughput increases
as back-hauling bandwidth raises. This is because
increasing the back-hauling bandwidth also increases
the back-hauling data rate capacity, thus increasing
the back-haulingbottleneck. Therefore, hybrid FSO/RF
communication links can be used to mitigate backhauling
bottleneck limitations and thus enhance the
overall performance.
VI. CONCLUSION
This paper proposes an efficient scheme that integrates
GBSs, TBs, HAPs, and satellite stations to provide global
connectivity. Our objective is to improve downlink
and uplink rates by optimizing back-hauling and
access links. We also proposed equipping the stations
with FSO transceivers to mitigate the back-hauling
bottleneck limitation as shown in the simulation result
section and therefore improve the data rate. In contract,
this needs more effort in optimizing extra variables
such as line-of-sight angles.
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Ahmad Alsharoa (S'14-M'18SM'19)
Ahmad Al- sharoa received
the PhD degree from Iowa State
University, USA, in May 2017. He is
currently an assistant professor in the
Electrical and Computer Engineering
department at Missouri University of
Science and Technology (Missouri
S&T). His current research interests
include: smart systems, mobile wireless networks, high-altitude
and satellite communications, edge computing,free-spaceoptical
communications, and greencommunications.
Mohamed-Slim Alouini (S'94M'98-SM'03-F'09)
was born in
Tunis, Tunisia. He received the Ph.D.
degree in Electrical Engineering from
the California Institute of Technology
(Caltech), Pasadena, CA, USA, in
1998. He served as a faculty member
in the University of Minnesota,
Minneapolis, MN, USA, then in the
Texas A&M University at Qatar, Education City, Doha, Qatar
before joining King Abdullah University of Science and
Technology (KAUST), Thuwal, Makkah Province, Saudi Arabia
as a Professor of Electrical Engineering in2009.
His current research interests include the modeling, design,
and performance analysis of wireless communication systems.
THE BRIDGE
https://www.fcc.gov/document/hurricane-irma-communications-statusreport-sept-11 https://www.fcc.gov/document/hurricane-irma-communications-statusreport-sept-11 https://aerospaceamerica.aiaa.org/features/drones-to-the-rescue https://aerospaceamerica.aiaa.org/features/drones-to-the-rescue https://hkn.ieee.org/
The Bridge - Issue 3, 2021

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