Results 51 to 60 of about 379 (143)

Investigation of the Scattering Noise in Underwater Optical Wireless Communications [PDF]

, 2021
In underwater optical wireless communications (UOWC), scattering of the propagating light beam results in both intensity and phase variations, which limit the transmission link range and channel bandwidth, respectively.
Ghassemlooy, Zabih, Gholami, Asghar, Majlesein, Behnaz   +2 more
core   +1 more source

Performance of RSMA-Based UOWC Systems Over Oceanic Turbulence Channel With Pointing Errors

IEEE Open Journal of the Communications Society
Underwater optical wireless communication (UOWC) systems face significant challenges due to oceanic turbulence and pointing errors (PE), which can degrade system performance. Moreover, interference is another challenge in UOWC, considering the consistent
Ziyaur Rahman, Imene Romdhane, Georges Kaddoum   +2 more
doaj   +1 more source

Distorted Laser Spot Center Positioning Based on Captured Image Under Laser-Camera Misalignment in UOWC

IEEE Photonics Journal, 2023
The laser spot center positioning is an essential step for camera-based terminal positioning and alignment in a long-distance laser-based underwater optical wireless communication (UOWC) system.
Weijie Liu, Yingying Jiang, Nuo Huang, Shangbin Li, Zhengyuan Xu   +4 more
doaj   +1 more source

Performance Analysis of the LDPC‐Coded Hybrid LQAM‐MPPM for UWOC Systems

IET Optoelectronics, Volume 20, Issue 1, January/December 2026.
The effectiveness of LDPC codes in improving the performance of hybrid modulations is discussed, with coded 128‐QAM‐(12, 2) MPPM offering ~6.5 and 5.8 dB code gains at a BER of in strong and moderate turbulence, respectively. These results demonstrate the promise of hybrid modulation with LDPC as a robust and efficient modulation scheme for UWOC ...
Hongyan Jiang, Wanyi Hu, Xin Liao, Ning He, Wasiu Popoola, Ahmad Fairuz Omar, Sujan Rajbhandari   +6 more
wiley   +1 more source

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

IEEE 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, Zihang Li, Zhu Hong, Ting Zhan, Yuhao Wang   +4 more
doaj   +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

Investigation of Underwater Optical Wireless Communications with Turbulence [PDF]

, 2018
Turbulence is due to the random variations of the refractive index of the medium (in this case water), which leads to fluctuation or fading of the received light intensity.
Ghassemlooy, Zabih, Gholami, Asghar, Omoomi, Masood, Vali, Zahra   +3 more
core  

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

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, Volume 6, Issue 7, July 2025.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source

LEDs for Underwater Optical Wireless Communication

Photonics
LEDs are readily controllable and demonstrate rapid switching capabilities. These attributes facilitate their efficient integration across a broad spectrum of applications.
Giuseppe Schirripa Spagnolo, Giorgia Satta, Fabio Leccese   +2 more
doaj   +1 more source