Results 31 to 40 of about 11,238 (217)

Performance Analysis of UAV-Assisted Hybrid FSO/RF Communication Systems under Various Weather Conditions

open access: yesSensors, 2023
Nowadays, unmanned aerial vehicle (UAV) communication systems are commonly considered as one of the key enabling technologies for 6G. The hybrid free space optical (FSO)/radio frequency (RF) system has the advantages of both FSO and RF links to improve ...
Yan Wu, Dejin Kong, Qian Wang, Gang Li
doaj   +1 more source

Analysis and evaluation of optimum wavelengths for free-space optical transceivers [PDF]

open access: yes, 2010
The objective of this paper is to analyse and present the latest results obtained for free-space optics (FSO) within the EU COST Action IC-0802 and within the European Space Agency (ESA) contract.
Z. Ghassemlooy   +15 more
core   +1 more source

Mobil FSO activities in Europe and fading mitigation approaches [PDF]

open access: yes, 2007
The increasing emergence of data services for mobile applications requires high-speed communication technologies. To this end, free-space optical (FSO) communications technology has the potential to outperform radio frequency (RF) systems.
Hennes Henniger   +5 more
core   +1 more source

Symbol Error Rate Analysis of Satellite Communication Systems with SAG-FSO/SH-FSO/RF Transmission

open access: yes, 2023
The satellite communication (Satcom) community is exploring the license-free optical spectrum to support the growing traffic demand in a cost-effective manner.
Samy, Ramy   +3 more
core   +1 more source

Internet of Things-Based Photovoltaics Parameter Monitoring System using ATMEGA328P [PDF]

open access: yesEPJ Web of Conferences
Photovoltaic (PV) systems require continuous monitoring to ensure optimal operational efficiency and performance tracking. This paper presents the design and implementation of a low-cost Internet of Things (IoT)-based photovoltaic parameter monitoring ...
Hammoudi Youness   +2 more
doaj   +1 more source

Experimental study of bit error rate of free space optics communications in laboratory controlled turbulence [PDF]

open access: yes, 2010
This paper reports experimental results for the performance of an free space optical (FSO) communication link employing different modulation schemes under the influence of the atmospheric scintillation.
Z. Ghassemlooy   +13 more
core   +1 more source

Effects of Atmospheric Turbulence on Optical Wireless Communication in NEOM Smart City

open access: yesPhotonics, 2022
The foundation of any smart city requires an innovative and robust communication infrastructure. Many research communities envision free-space optical communication (FSO) as a promising backbone technology for the services and applications provided by ...
Ayshah S. Alatawi   +4 more
doaj   +1 more source

Cascaded FSO-VLC Communication System [PDF]

open access: yesIEEE Wireless Communications Letters, 2017
The proposed cascaded free space optics (FSO)-visible light communication (VLC) system consists of multiple VLC access points which caters the end users connected via a decode and forward relay to the FSO backhaul link. The FSO link is assumed to be affected by path-loss, pointing error, and atmospheric turbulence while the end-to-end signal-to-noise ...
Akash Gupta 0003   +3 more
openaire   +2 more sources

Performances Study of PSK and ASK Modulation Technique under Atmospheric Turbulence in FSO Communication System [PDF]

open access: yesEngineering and Technology Journal
The performance and reliability of a free-space optical (FSO) communication system can be greatly increased using various methods. The primary goal of each technique is to reduce the effect of disturbances that lead to intensity or phase fluctuations in ...
Esraa Al – Gazzi   +2 more
doaj   +1 more source

Optimal Multiple FSO Transceiver Configuration for Using on High-Altitude Platforms

open access: yesIEEE Access, 2023
Free-space optical (FSO) communication requires light of sight (LoS) between the transmitter and the receiver. For long-distance communication, many research projects have been conducted towards using a network composed of high-altitude platforms (HAPs ...
Dieu Linh Truong, The Ngoc Dang
doaj   +1 more source

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