Results 31 to 40 of about 3,994 (304)

Adaptive Diversity Algorithm Based on Block STBC for Massive MIMO Link Misalignment in UWOC Systems

Journal of Marine Science and Engineering, 2023
In the past few years, underwater wireless optical communication (UWOC) has become a promising wireless communication technology in the underwater environment.
Yanlong Li, Kongliang Zhu, Yutong Jiang, Syed Agha Hassnain Mohsan, Xiao Chen, Shuaixing Li   +5 more
doaj   +1 more source

Energy Harvesting Hybrid Acoustic-Optical Underwater Wireless Sensor Networks Localization

Sensors, 2017
Underwater wireless technologies demand to transmit at higher data rate for ocean exploration. Currently, large coverage is achieved by acoustic sensor networks with low data rate, high cost, high latency, high power consumption, and negative impact on ...
Nasir Saeed, Abdulkadir Celik, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini   +3 more
doaj   +1 more source

Converging Underwater and FSO Ground Communication Links. [PDF]

, 2019
We propose a new combined underwater-atmospheric optical communication link for providing a high speed optical connectivity between onshore and sumerge systems.
Jurado-Navas, Antonio, M. Castillo-Vázquez, A. Puerta-Notario, Castillo-Vázquez, Miguel, A. García-Zambrana, García-Zambrana, Antonio, Garrido-Balsells, José María, Puerta-Notario, Antonio, A. Jurado-Navas, J.M. Garrido-Balsells   +9 more
core   +1 more source

Security weaknesses of underwater wireless optical communication

Optics Express, 2017
In this work, for the first time, we uncover that the level of security we have traditionally taken for granted on underwater wireless optical communication (UWOC) may not always be there. We first numerically investigate the security weaknesses of UWOC via Monte Carlo simulation. With the link distance increasing or the water becoming more turbid, the
Meiwei, Kong, Jiongliang, Wang, Yifei, Chen, Tariq, Ali, Rohail, Sarwar, Yang, Qiu, Shilian, Wang, Jun, Han, Jing, Xu   +8 more
openaire   +2 more sources

Performance Evaluation of Underwater Wireless Optical Communication System by Varying the Environmental Parameters

, 2021
Underwater wireless optical communication (UWOC) has been considered a promising technology for high-speed underwater transmission. Some Gb/s level UWOC systems applying visible light have been demonstrated with a transmission distance of several meters ...
Chien-Hung Yeh, Shofuro Afifah, Dong-Chang Li, Chia-Chun Chen, Jiun-Yu Sung, Shien-Kuei Liaw   +5 more
core   +1 more source

Effects and Constraints of Optical Filtering on Ambient Light Suppression in LED-Based Underwater Communications

Sensors, 2018
Optical communication promises to be a high-rate supplement for acoustic communication in short-range underwater applications. In the photic zone of oceanic and coastal waters, underwater optical communication systems are exposed by remaining sunlight ...
Jan Sticklus, Martin Hieronymi, Peter Adam Hoeher   +2 more
doaj   +1 more source

Optical wireless communication-based 2K real-time video surveillance system for future underwater visual monitoring

, 2023
We develop an optical wireless communication-based 2K real-time video surveillance system prototype with field-programmable gate arrays. Using a 3-W blue light-emitting diode and an avalanche photo-diode, 20-m and 1.5-m real-time picture/video ...
Ng, Tien Khee, Ooi, Boon S., Kong, Meiwei, Yuan, Hexiang, Yang, Qunhui   +4 more
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Design and RTL-Level FPGA Realization of a MIMO-GFDM Digital Baseband Modem for Underwater Optical Wireless Communication

International Journal of Emerging Research in Engineering, Science, and Management
Underwater Wireless Communication (UWC) has emerged as an important enabling technology for applications including ocean observation, offshore monitoring, underwater sensor networks, assisted navigation, and Internet of Underwater Things (IoUTs).
V Tejovathi, S Swarnalatha
doaj   +1 more source

Conductive Hydrogels for Exogenous Sensing and Cell Fate Control

Advanced Materials, EarlyView.
We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar, Carlos Alejandro Jimenez‐Rodriguez, Railia Biktimirova, Ilka Hermes, Thomas Kurth, My Duyen Pham, Mikhail Tsurkan, Jens Friedrichs, Francis L. C. Morgan, Hans Kleemann, Olga Guskova, Uwe Freudenberg, Peter Fratzl, Carsten Werner, Christoph Tondera, Ivan R. Minev   +15 more
wiley   +1 more source