Results 81 to 90 of about 379 (143)

An Overview of Underwater Optical Wireless Communication Channel Simulations with a Focus on the Monte Carlo Method

Mathematics
Building a reliable and optimum underwater optical wireless communication (UOWC) system requires identifying all potential factors that cause the attenuation and dispersion of the optical signal.
Intesar Ramley, Hamdah M. Alzayed, Yas Al-Hadeethi, Mingguang Chen, Abeer Z. Barasheed   +4 more
doaj   +1 more source

Adaptive RIS Optimization for Secure Underwater Optical Communications

IEEE Access
Underwater Optical Wireless Communication (UOWC) systems are subject to significant degradation due to dynamic salinity gradients, temperature variations, and turbulence-induced noise, which distort light propagation and compromise data integrity.
Oliger Veronica Mendoza Betancourt, Delgi Peraza   +1 more
doaj   +1 more source

Heterogeneous radio frequency/underwater optical wireless communication relaying systems with MIMO scheme

Digital Communications and Networks
This paper studies a cooperative relay transmission system within the framework of Multiple-Input Multiple-Output Radio Frequency/Underwater Optical Wireless Communication (MIMO-RF/UOWC), aiming to establish sea-based heterogeneous networks.
Sai Li, Liang Yang, Yusheng Sun, Qianfen Jiao   +3 more
doaj   +1 more source

Evaluation of underwater optical wireless channels over F turbulence for different detection types [PDF]

This paper presents a comprehensive performance study for the underwater optical wireless communication (UOWCs) channel, accounting for the effects of attenuation, turbulence, pointing errors, and fluctuations in the angle-of-arrival (AOA), modeled by ...
Al-Sallami, Farah Mahdi, Ata, Yalçın, Rajbhandari, Sujan, Zedini, Emna   +3 more
core   +1 more source

Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems

IEEE Photonics Journal
In this paper, a multiuser detection technique is proposed and experimentally verified in underwater optical wireless communication (UOWC) under dynamic channel conditions, which incorporates subspace-based delay estimation and decorrelating multiuser ...
Weijie Liu, Xiaorui Chen, Nuo Huang, Zhengyuan Xu   +3 more
doaj   +1 more source

Low-PAPR and Low-Complexity Transmission Schemes for DHT-Based Underwater Optical Wireless Systems

IEEE Photonics Journal
This paper presents a low-complexity, low-peak-to-average power ratio (PAPR) transmission scheme for discrete Hartley transform (DHT)-based underwater optical wireless communication (UOWC) systems, termed LPC-DHT-OFDM.
Wei-Wen Hu
doaj   +1 more source

An Underwater Multi-User Communication System Using Photomultiplier-Tube-Based Photon Detector With Dead-Time Effect and Shot Noise

IEEE Photonics Journal
We investigate detection for practical photon-counting receivers in underwater optical wireless communication (UOWC) systems, where dead-time effects and multi-user interference (MUI) pose significant challenges.
Fanghua Li, Xiaolin Zhou, Yongkang Chen
doaj   +1 more source

Optical Wireless Data Center Networks [PDF]

, 2018
Bandwidth and computation-intensive Big Data applications in disciplines like social media, bio- and nano-informatics, Internet-of-Things (IoT), and real-time analytics, are pushing existing access and core (backbone) networks as well as Data Center ...
Hamza, Abdelbaset S.
core   +1 more source

Application of phase-conjugate beams in beam correction and underwater optical wireless communication subject to surface wave turbulence. [PDF]

Front Optoelectron, 2022
Li Q, Yuan X, Zhou F, Zhou Z, Liu W.
europepmc   +1 more source

Physical-Layer Security in Mixed UOWC-RF Networks With Energy Harvesting Relay Against Multiple Eavesdroppers

IEEE Open Journal of the Communications Society
In this study, physical layer security (PLS) in a dual-hop underwater optical wireless communication (UOWC)-radio frequency (RF) network under the intruding attempts of multiple eavesdroppers via RF links is considered. An intermediate decode-and-forward
Moloy Kumar Ghosh, Milton Kumar Kundu, MD. Ibrahim, A. S. M. Badrudduza, MD. Shamim Anower, Imran Shafique Ansari, Annie Solomon, Sumit Chakravarty, Imtiaz Ahmed, Heejung Yu   +9 more
doaj   +1 more source