Results 61 to 70 of about 549 (116)

Experimental Investigation of Wave Loads on U-OWC Breakwater

open access: yesJournal of Marine Science and Engineering, 2022
A small-scale field experiment was conducted on a U-OWC incorporated into a caisson breakwater at the NOEL laboratory of Reggio Calabria (Italy). The U-Oscillating Water Column (U-OWC) or REWEC (REsonant Wave Energy Converter) is a device belonging to ...
Alessandra Romolo   +4 more
doaj   +1 more source

Extended Kalman Filter for Turbo-synchronization Application to DVB-RCS [PDF]

open access: yes, 2004
We give in this paper a new algorithm combining the so called Extended Kalman Filter, a technique coming from stochastic filtering, within a turbo synchronization loop.
Cérou, Frédéric
core   +1 more source

Seamless Integration of UOWC/MMF/FSO Systems Using Orbital Angular Momentum Beams for Enhanced Data Transmission

open access: yesPhotonics
This work presents a high-speed hybrid communication system integrating Underwater Optical Wireless Communication (UOWC), Multimode Fiber (MMF), and Free-Space Optics (FSO) channels, leveraging Orbital Angular Momentum (OAM) beams for enhanced data ...
Mehtab Singh   +4 more
doaj   +1 more source

Photon-Counting Underwater Wireless Optical Communication by Recovering Clock and Data From Discrete Single Photon Pulses

open access: yesIEEE Photonics Journal, 2019
To realize a long-distance underwater communication by using low-cost light emitting diode (LED) and single photon avalanche diode (SPAD), we proposed a method for recovering clock and data directly from discrete random pulse sequences output by SPAD. On
Qiurong Yan   +4 more
doaj   +1 more source

On the Relative Effect of Underwater Optical Turbulence in Different Channel Conditions [PDF]

open access: yes
This paper presents a simulation framework for modelling optical underwater turbulence in conjunction with absorption and scattering. Using this technique, the channel is evaluated in two ways: the turbulent statistics in different channel conditions ...
Geldard, Callum   +2 more
core   +2 more sources

Statistical Channel Impulse Response Modeling for Optical Wireless Communication in Turbid Waters [PDF]

open access: yes, 2019
Underwater optical wireless communication (UOWC) systems support high-speed, reliable and cost-effective implementations that are demanded for extending the telecommunication networks to oceans.
Boluda-Ruiz, Rubén   +4 more
core  

Advancements in Underwater Optical Wireless Communication: Channel Modeling, PAPR Reduction, and Simulations With OFDM

open access: yesIEEE Photonics Journal
Compared to underwater radio waves and acoustic communication technology, underwater optical communication technology has emerged as a technical means of underwater data and information transmission.
Liwei Yang   +5 more
doaj   +1 more source

Underwater optical wireless communications [PDF]

open access: yes, 2019
Underwater optical wireless communications (UOWC) is an exciting new field that has grasped attention from several research groups worldwide .This this aimed to conduct a profound study of thew most relevant aspects of a UOWC system.
Rafael Magalhães Gomes Kraemer
core  

UOWC spatial diversity techniques over hostile maritime environments: an approach under imperfect CSI and per-source power constraints [PDF]

open access: yes
Optical communication in submarine environments has emerged as a novel technology that enables high bandwidth and high data rate links. However, the unique characteristics of the underwater channel impose new challenges, such as mitigating the remarkable
Boluda-Ruiz, Rubén   +6 more
core   +1 more source

Study of Membrane Reflector Technology [PDF]

open access: yes
Very large reflective surfaces are required by future spacecraft for such purposes as solar energy collection, antenna surfaces, thermal control, attitude and orbit control with solar pressure, and solar sailing.
Hedgepeth, J., Knapp, K.
core   +1 more source

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