Results 21 to 30 of about 313,418 (192)

Advances and Prospects of Free Space Optical Communication in Space Applications [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی
This research aims to investigate the emerging technology of free-space optical communication and its applications in the space industry. By employing light beams as information carriers, this technology offers significantly higher bandwidth and enhanced
Javad Haghshenas
doaj   +1 more source

SAC-OCDMA over Hybrid FTTx Free Space Optical Communication Networks

open access: yesJournal of Telecommunications and Information Technology, 2015
This paper presents an investigation of Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) over hybrid Fiber-to-the-x (FTTx) Free Space Optical (FSO) link under different weather conditions.
Ratna Kalos Zakiah Sahbudin   +4 more
doaj   +1 more source

G‐MGF based performance analysis of coherent FSO systems with multiple receivers

open access: yesElectronics Letters, 2021
This letter investigates the performance of coherent free‐space optical systems with multiple receivers especially through the generalised moment‐generating function based approach.
Seongah Jeong, Jinkyu Kang, Hoojin Lee
doaj   +1 more source

Free Space Optical Communication in Long-Reach Unidirectional Ring-Architecture Fiber Network

open access: yesIEEE Access, 2020
In the work, a ring-constructed wavelength-division-multiplexing (WDM) access system for delivering multiple free space optical (FSO) wireless signals is investigated.
Chien-Hung Yeh   +4 more
doaj   +1 more source

Vortex instability in turbulent free-space propagation [PDF]

open access: yes, 2018
The spatial structuring of optical fields is integral within many next generation optical metrology and communication techniques. A verifiable physical model of the propagation of these optical fields in a turbulent environment is important for ...
Lavery, Martin P.J.
core   +1 more source

Single-Layer Phase Screen With Pointing Errors for Free Space Optical Communication

open access: yesIEEE Access, 2021
Single-layer phase screen is a classical, simple and accurate approach for simulating the optical field under turbulence, and it is generally used in free space optical communication (FSOC).
Xin Liu   +4 more
doaj   +1 more source

Free Space Optical Polarization De-multiplexing and Multiplexing by means of Conical Refraction [PDF]

open access: yes, 2012
Polarization de-multiplexing and multiplexing by means of conical refraction is proposed to increase the channel capacity for free space optical communication applications.
Kalkandjiev, Todor K.   +3 more
core   +3 more sources

Adaptive symbol-rate free-space-optical communications [PDF]

open access: yes2013 Australian Communications Theory Workshop (AusCTW), 2013
Free space optical communications through fading atmospheric channels can achieve improved throughput by using adaptive transmission techniques. This paper considers the use of adaptive symbol-rate and transmit-power methods. We use an idealised model of channel coding that assumes zero errors can be achieved above some SNR threshold and adjust the ...
Cowley, William G.   +2 more
openaire   +3 more sources

Buffer-Aided Max-Link Relaying for Free Space Optical Communication With Delay Constraints

open access: yesIEEE Photonics Journal, 2022
In this paper, we introduce the concept of buffer-aided cooperative relaying for a free-space optical (FSO) communication system. The proposed FSO system consists of $K$ decode-and-forward(DF) relays, each equipped with a buffer of size $L$. The proposed
Ashish Kant Shukla, Manav R. Bhatnagar
doaj   +1 more source

Strong converse for the classical capacity of optical quantum communication channels [PDF]

open access: yes, 2015
We establish the classical capacity of optical quantum channels as a sharp transition between two regimes---one which is an error-free regime for communication rates below the capacity, and the other in which the probability of correctly decoding a ...
Bardhan, Bhaskar Roy   +3 more
core   +3 more sources

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