Results 31 to 40 of about 1,118,680 (286)

Secrecy performance of FSO communication systems with non‐zero boresight pointing errors

open access: yesIET Communications, 2021
Free space optical (FSO) communication is a promising candidate for the next generation (5G and beyond) wireless communication systems, due to its merits (i.e. low latency, high data rate, and license‐free band, among others).
Gyan Deep Verma   +3 more
doaj   +1 more source

Dataset 1. Mean pointing errors

open access: yes, 2013
Pointing errors (º) were measured for each individual participant in sets of 12 trials before (pre-test) and after (post-test) the first set of prism adaptation, and at the end of the experimental session (late-test). For each participant the errors were
Alexandra List (467271)   +2 more
core   +1 more source

Performance Analysis of Free Space Optical Link with Pointing Errors

open access: yes, 2022
Free-space optical communication (FSO) has been proposed as an attractive alternative to radio frequency communication in the sense that it provides wide bandwidth and high capacity without requirement of license.
‍Jung, Kug-Jin
core   +1 more source

Pointing errors in solar absorption spectrometry – correction scheme and its validation [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A method for quantification of sun-pointing inaccuracies in solar absorption spectrometry is presented along with a correction scheme for the resulting errors in trace gas vertical column or profile retrievals.
A. Reichert, P. Hausmann, R. Sussmann
doaj   +1 more source

Performance of FSO Communication Systems Employing Alamouti-Type Space-Time Encoding Over Málaga Channels With Pointing Errors

open access: yesIEEE Photonics Journal, 2022
In this work, spatial diversity techniques have been proposed for free-space optical (FSO) communication systems to combat the deteriorating effects, such as atmospheric turbulence effects and pointing errors, and the performance of FSO communication ...
Abdulgani A. Ibrahim   +2 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

On the Performance of Multihop Heterodyne FSO Systems With Pointing Errors

open access: yesIEEE Photonics Journal, 2015
This paper reports the end-to-end performance analysis of a multihop free-space optical system with amplify-and-forward (AF) channel-state-information (CSI)-assisted or fixed-gain relays using heterodyne detection over Gamma-Gamma turbulence fading with ...
Emna Zedini, Mohamed-Slim Alouini
doaj   +1 more source

A General Model for Pointing Error of High Frequency Directional Antennas

open access: yesIEEE Open Journal of the Communications Society, 2022
This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error for a general case at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links.
Mohammad Taghi Dabiri   +4 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

Characterization of orbital angular momentum-multiplexed FSO channel in the presence of pointing errors

open access: yes, 2023
Free space optical communication (FSO) uses laser transmitters at near-infrared wavelengths for line-of-sight wireless communication. Through the use of advanced laser beams instead of the conventional Gaussian-shaped beam, orbital angular momentum (OAM)
Tadayyoni, Hamed   +2 more
core   +1 more source

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