Results 31 to 40 of about 36,566 (236)

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

Optical, Wired and Wireless Multimedia Service Access Solutions for Trend Setting Real Estates

open access: yesCommunications, 2008
It is a well known fact that the value of real estates is raised tremendously by its connection to information technology services like Voice over IP (VoIP), IPTV, Video on Demand (VoD), basic Internet services and house-, security- and surveillance ...
Peter Mandl, P. Schrotter, E. Leitgeb
doaj   +1 more source

Experimental investigation of the performance of different modulation techniques under controlled FSO turbulence channel [PDF]

open access: yes, 2011
This paper experimentally investigates and compares the performance of the free space optics system employing three different modulation schemes, on-off keying (OOK) with nonreturn- to-zero (NRZ) and return-to-zero (RZ) and the binary phase shift keying (
Adebanjo, Olusegun   +5 more
core   +1 more source

WiMAX on FSO: Outage Probability Analysis [PDF]

open access: yesIEEE Transactions on Communications, 2012
The transmission of multiple wireless signals over optical links has attained a great research interest nowadays. In case where optical fibers are difficult to be deployed, or installation cost is prohibited, optical wireless systems provide an efficient alternative means.
Vaiopoulos, N.   +2 more
openaire   +2 more sources

Shadowed FSO/mmWave Systems With Interference [PDF]

open access: yesIEEE Transactions on Communications, 2019
We investigate the performance of mixed free space optical (FSO)/millimeter-wave (mmWave) relay networks with interference at the destination. The FSO/mmWave channels are assumed to follow Malaga-M/Generalized-K fading models with pointing errors in the FSO link.
Imene Trigui   +3 more
openaire   +2 more sources

IMPLEMENTATION OF AN EFFECTIVE FSO WDM SYSTEM UNDER DIFFERENT ATMOSPHERIC CONDITIONS WITH DIFFERENT CODING SCHEMES [PDF]

open access: yesJournal of Mechanics of Continua and Mathematical Sciences
In different atmospheric conditions, Free Space Optical (FSO) transmission is vital because it sends data via light beams through the atmosphere. This technique transmits data quickly and efficiently with low signal attenuation in clear weather.
Basim Galeb   +4 more
doaj   +1 more source

Design and Experimental Investigation of Decode-and-Forward and Amplify-and-Forward Relaying FSO-CDMA

open access: yesIEEE Photonics Journal, 2022
The scheme of combining relay and optical code division multiple access (OCDMA) is one of the effective methods to improve the reliability and security of free space optical (FSO) communication system.
Jianhua Ji   +4 more
doaj   +1 more source

Adaptive-Combining-Based Hybrid FSO/RF Satellite Communication With and Without HAPS

open access: yesIEEE Access, 2021
In recent years, a growing interest has been witnessed in the usage of free space optics (FSO) link for satellite communication (SATCOM) scenarios, as it offers much higher data rates up to gigabits per second (Gbps) compared to existing radio frequency (
Suyash Shah   +4 more
doaj   +1 more source

Methods of Atmospheric Coherence Length Measurement

open access: yesApplied Sciences, 2022
Free-space optical (FSO) communication possesses the advantages of high security, large information capacity, high-speed transmission, small terminal size, low power consumption, easy and flexible deployment, etc.
Ming Li, Pengxin Zhang, Jiawei Han
doaj   +1 more source

On the Performance of Millimeter Wave-based RF-FSO Links with HARQ Feedback

open access: yes, 2016
This paper studies the performance of hybrid radio-frequency (RF) and free-space optical (FSO) links in the cases with and without hybrid automatic repeat request (HARQ).
Alouini, Mohamed-Slim   +2 more
core   +1 more source

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