Results 61 to 70 of about 316,392 (313)

Retrofitting FSO Systems in Existing RF Infrastructure: A Non-Zero-Sum Game Technology

IEEE Open Journal of the Communications Society, 2021
Progress in optical wireless communication (OWC) has unleashed the potential to transmit data in an ultra-fast manner without incurring large investments and bulk infrastructure.
Abderrahmen Trichili, Amr Ragheb, Dmitrii Briantcev, Maged A. Esmail, Majid Altamimi, Islam Ashry, Boon S. Ooi, Saleh Alshebeili, Mohamed-Slim Alouini   +8 more
doaj   +1 more source

Communication protocols for Free-Space Optical links [PDF]

, 2015
Táto diplomová práca sa zaoberá správaním protokolu TCP/IP pri prechode bezdrôtovým optickým spojom, ktorý je ovplyvnený atmosférickými turbulenciami. Tie spôsobujú fluktuáciu prijímaného optického výkonu a tým zmenu bitovej chybovosti spoja.
Šedo, Ondrej
core   +1 more source

A Comparative Survey of Optical Wireless Technologies: Architectures and Applications

, 2018
New high-data-rate multimedia services and applications are evolving continuously and exponentially increasing the demand for wireless capacity of fifth-generation (5G) and beyond.
Chowdhury, Mostafa Zaman, Hossan, Md. Tanvir, Islam, Amirul, Jang, Yeong Min   +3 more
core   +1 more source

Free-space and underwater GHz data transmission using AlGaInN laser diode technology [PDF]

, 2016
Laser diodes fabricated from the AlGaInN material system is an emerging technology for defence and security applications; in particular for free space laser communication.
Boćkowski, M., Czernecki, R., Kelly, A.E., Kucharski, R., Leszczyński, M., Marona, L., Najda, S.P., Perlin, P., Suski, T., Targowski, G., Watson, S., Wisniewski, P.   +11 more
core   +1 more source

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu, Yuxi Gong, Weilin Xu, Xingjian Sun, Gefei Jiang, Lei Qiu, Kexin Shi, Mengxing Wu, Yinjiao Fei, Jinling Yuan, Jinyan Luo, Yurong Li, Yuandong Cao, Minhong Pan, Shu Zhou   +14 more
wiley   +1 more source

Adaptively energy-efficient power transmission for free space optical communication

Journal of Engineering and Applied Science
The Free Space Optical (FSO) is a wireless optical system that has many advantages such as low installation time, low installation cost, flexible deployment, high data rate, high data security, and unlicensed spectrum usage. However, FSO links degrade in
Yousef E. M. Hamouda
doaj   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Coding techniques for diversity enhancement of dense wavelength division multiplexing MIMO‐FSO fault protection protocols systems over atmospheric turbulence channels

IET Optoelectronics
An enhanced transmission is presented in a multiple‐input‐multiple‐output (MIMO) dense‐wavelength division multiplexed (DWDM) free‐space‐optical (FSO) communication link using diversity coding techniques under the effect of turbulent weather phenomenon ...
Ebrahim E. Elsayed, Mohammed R. Hayal, Irfan Nurhidayat, Mohd Asif Shah, Abdelrahman Elfikky, Ayman I. Boghdady, Davron Aslonqulovich Juraev, M. A. Morsy   +7 more
doaj   +1 more source

Experimental study of bit error rate of free space optics communications in laboratory controlled turbulence [PDF]

, 2010
This paper reports experimental results for the performance of an free space optical (FSO) communication link employing different modulation schemes under the influence of the atmospheric scintillation.
Adebanjo, Olusegun, Ansari, S., Ghassemlooy, Zabih, Ijaz, Muhammad, Le Minh, Hoa, Leitgeb, Erich, Rajbhandari, Sujan   +6 more
core   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick, Nomin Enkhtsetseg, Joseph Sadok, Matheus Mochetti, Annabel Sorby Adams, Jennifer Guo, Cristina Trapaga Hacker, Isabella Gomez Hjerthen, Seungwon Lee, Siddharth Satish, Andrew S. Ham, Justin Hill, Denis Balaban, Kevin Kyle, Rebecca L. Gillani, Marcelo Matiello, Aleksandar Videnovic, Eric C. Klawiter, W. Taylor Kimberly, Farrah J. Mateen   +19 more
wiley   +1 more source