Results 51 to 60 of about 549 (116)

Closed Form Expressions for Underwater‐RF System Over Decode‐Forward Relaying

Journal of Sensors, Volume 2025, Issue 1, 2025.
In the development of advanced communication systems for the underwater‐radio frequency (RF), use of relay has been found highly significant. Due to multipath fading and shadowing, performance of any wireless communication is severely degraded. Using relay‐based communication system deployed in the severe fading environment, we can achieve significant ...
Brijesh Kumar Singh, S. Pratap Singh, Kanwarpreet Kaur, Raghevendra Jaiswal, Vikash Singh, Shonak Bansal   +5 more
wiley   +1 more source

Meijer-G Function With Continued Product and Integer Exponent: Performance of Multi-Aperture UOWC System Over EGG Turbulence

IEEE Photonics Journal
Signal transmission over underwater optical wireless communication (UOWC) experiences the combined effect of oceanic turbulence and pointing errors statistically modeled using the sum of two Meijer-G functions.
Arvind Kumar, Nikumani Choudhury, Jayendra N. Bandyopadhyay, S. M. Zafaruddin   +3 more
doaj   +1 more source

Challenges and Opportunities of Optical Wireless Communication Technologies [PDF]

, 2017
In this chapter, we present various opportunities of using optical wireless communication (OWC) technologies in each sector of optical communication networks. Moreover, challenges of optical wireless network implementations are investigated.
Alimi, Isiaka, Shahpari, Ali, Sousa, Artur, Ferreira, Ricardo, Monteiro, Paulo, Teixeira, António   +5 more
core   +1 more source

A novel security‐based adaptive reconfigurable intelligent surfaces assisted clustering strategy

Electronics Letters, Volume 60, Issue 17, September 2024.
A multi‐hop RIS‐assisted underwater optical wireless communication (UOWC) system adopting the SA‐RIS clustering strategy, which aims to realize the efficient utilization of channel transmission strategy, is proposed in this letter. Closed‐form expressions of the PDF and CDF based on the proposed RIS‐assisted UOWC systems are derived in terms of SNR ...
Yue Tian, Xiaofan Zheng
wiley   +1 more source

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

Inverse nonlinear PAM4 modulation with high-power transmitter for extending transmission distances of underwater optical wireless communications [PDF]

This paper proposes an inverse nonlinear PAM4 (INL-PAM4) modulation to mitigate nonlinearity (NL) in an underwater optical wireless communication (UOWC) system.
24668, 8658, 90273036, 90706996, Hanawa, Masanori, Khansalee, Ekkaphol, Okamura, Yasuhiro, オカムラ, ヤスヒロ, ハナワ, マサノリ, 塙, 雅典, 岡村, 康弘   +10 more
core   +1 more source

Monte Carlo Radiative Transfer Modeling of Underwater Channel [PDF]

, 2019
The radiative transfer equation (RTE) is a theoretical framework that can be used for predicting and interpreting underwater light fields in terms of the constituents of natural water bodies. However, the RTE is a complex integrodifferential equation and
Kraemer, Rafael M.G., Pessoa, Luís M., Salgado, Henrique M.   +2 more
core   +1 more source

A Comprehensive Performance Comparison of DFT-S DMT and QAM-DMT in UOWC System in Different Water Environments

IEEE Photonics Journal, 2021
In this paper, we experimentally demonstrate a 450-nm laser underwater optical wireless transmission system, in which a comprehensive investigation is made to show the significant performance improvement of the discrete Fourier transform spread discrete ...
Ji Du, Xiaojian Hong, Yuan Wang, Zhanpeng Xu, Wenyi Zhao, Nanfei Lv, Chao Fei, Sailing He   +7 more
doaj   +1 more source

Effects of Turbulence Induced Scattering on Underwater Optical Wireless Communications [PDF]

, 2020
This paper presents a comprehensive description of the relative effect of optical underwater turbulence in combination with absorption and scattering. Turbulence induced scattering is shown to cause and increase both spatial and temporal spreading at the
Geldard, Callum T., Popoola, Wasiu O., Thompson, John   +2 more
core   +1 more source

Evaluating 60 GHz Band Underwater Optical Wireless Communication Performance Based on Low-Density Parity Check Coding Under Diverse Water Conditions and Noise Levels

IEEE Access
Underwater optical wireless communication (UOWC) is a recent advancement in optical wireless communication (OWC) that offers a higher capacity and bandwidth for underwater applications than traditional acoustic systems. However, UOWC links are vulnerable
Aser M. Matarneh, Aseel M. Rwaidi, Saqer S. Alja'afreh   +2 more
doaj   +1 more source