Results 11 to 20 of about 493 (166)

Two-way free-space optics-based interface between fibre and 5G communication employing polarisation-orthogonal modulation

Communications Engineering, 2023
Fifth-generation (5G) communication provides a substantial increase in data transmission capacity because of more available bandwidth and advanced communication techniques.
Hai-Han Lu, Xu-Hong Huang, Chung-Yi Li, Yan-Zhen Xu, Jia-Lian Jin, Wei-Xiang Chen, Chih-Hong Lin, Tsai-Man Wu   +7 more
doaj   +1 more source

A Location-Aware Resource Optimization for Maximizing Throughput of Emergency Outdoor–Indoor UAV Communication with FSO/RF

Sensors, 2023
In emergency communication scenarios, unmanned aerial vehicles (UAVs) can be used as an air relay to provide higher-quality communication for indoor users.
Zinan Guo, Wei Gao, Haijun Ye, Guofeng Wang   +3 more
doaj   +1 more source

A Hybrid Millimeter-Wave and Free-Space-Optics Communication Architecture with Adaptive Diversity Combining and HARQ Techniques

Photonics, 2023
We propose and demonstrate a hybrid communication architecture that combines millimeter-wave (MMW) in the radio frequency (RF) domain and free-space-optics (FSO) technologies using adaptive combining and hybrid automatic repeat request (HARQ) techniques.
Yinjun Liu, Xiaochuan Tan, Junlian Jia, Boyu Dong, Changle Huang, Penghao Luo, Jianyang Shi, Nan Chi, Junwen Zhang   +8 more
doaj   +1 more source

Performance analysis of 40 Gb/s free space optics transmission based on orbital angular momentum multiplexed beams

Alexandria Engineering Journal, 2022
This paper explores the data carrying capacity enhancement in free space optics (FSO) transmission systems by employing orbital angular momentum (OAM) multiplexing technique.
Mehtab Singh, Ahmad Atieh, Amit Grover, Omar Barukab   +3 more
doaj   +1 more source

Hybrid MDM-PDM Based Ro-FSO System for Broadband Services by Incorporating Donut Modes Under Diverse Weather Conditions

Frontiers in Physics, 2021
High-speed data demand in sensitive locations has prompted new wireless technologies to grow in areas like hospitals for bio-sensor data transmission between doctors and patients.
Sushank Chaudhary, Lunchakorn Wuttisittikulkij, Jamel Nebhen, Xuan Tang, Muhammad Saadi, Sattam Al Otaibi, Ahmed Althobaiti, Abhishek Sharma, Sunita Choudhary   +8 more
doaj   +1 more source

Feasibility Analysis Of Free Space Earth To Satellite Optical Link In Tropical Region

International Islamic University Malaysia Engineering Journal, 2012
Free Space Optics (FSO) becomes a great attention because of the chances in transmitting data up to 2.5Gbps. There are a lot of advantages offered by FSO such as easily deployment with saving time and cost and no electromagnetic interference. In spite of
Norhanis Aida M. Nor, Md. Rafiqul Islam, Wajdi Al-Khateeb   +2 more
doaj   +1 more source

Analysis of Free-Space Optics Development

Metrology and Measurement Systems, 2017
The article presents state of work in technology of free-space optical communications (Free Space Optics − FSO). Both commercially available optical data links and their further development are described.
Mikołajczyk Janusz, Bielecki Zbigniew, Bugajski Maciej, Piotrowski Józef, Wojtas Jacek, Gawron Waldemar, Szabra Dariusz, Prokopiuk Artur   +7 more
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Adaptive free space optic system based on visibility detector to overcome atmospheric attenuation

Results in Physics, 2019
Free space optics (FSO) provides high data rate by allowing transmission of signal through atmosphere. FSO is affected by different weather conditions. The atmospheric attenuation is caused by two main factors; absorption and scattering.
Muhammad K. El-Nayal, Mohamed M. Aly, Heba A. Fayed, Roshdy A. AbdelRassoul   +3 more
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Design of Free Space Optical Communication for Efficient Communication [PDF]

ITM Web of Conferences
Free Space Optics is a form of Optical Wireless communication technique that uses free space as a medium between transmitter and receveur. It is especially useful for short range point-to-point communication links when a physical communication ...
Samalla Krishna, Kumar P. Naveen, Subba Rao S.P.V., Bhargava Sruthi   +3 more
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Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers

International Islamic University Malaysia Engineering Journal, 2012
:  Multiple transmitters/receivers (TX/RX) are used to improve the quality of Free Space Optics (FSO) communication systems. With the current needs of this technology for longer distance communication, the qualitative analysis of the system has become ...
Nur Haedzerin Md Noor, Ahmed Wathik Naji, Wajdi Al-Khateeb   +2 more
doaj   +1 more source