Results 31 to 40 of about 10,341 (217)

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

A Comprehensive Comparison and Analysis of Several Intensity Modulations Based on the Underwater Photon-Counting Communication System

Frontiers in Physics, 2022
Underwater wireless optical communication is facing absorption, scattering problems, which, in principle, can be greatly resolved by underwater photon-counting communication (UPCC) technology that exhibits high-sensitivity communication characteristics ...
Xiaotian Han, Xiaotian Han, Peng Li, Chang Chang, Duorui Gao, Dongquan Zhang, Peixuan Liao, Wei Wang, Xiaoping Xie, Xiaoping Xie   +9 more
doaj   +1 more source

Orbital Angular Momentum-based Space Division Multiplexing for High-capacity Underwater Optical Communications [PDF]

, 2016
To increase system capacity of underwater optical communications, we employ the spatial domain to simultaneously transmit multiple orthogonal spatial beams, each carrying an independent data channel.
Ahmed, Nisar, Arbabi, Amir, Arbabi, Ehsan, Ashrafi, Solyman, Cao, Yinwen, Faraon, Andrei, Kamali, Seyedeh Mahsa, Li, Long, Liu, Cong, Ren, Yongxiong, Tur, Moshe, Wang, Zhe, Willner, Alan E., Willner, Asher J., Xie, Guodong, Yan, Yan, Zhao, Zhe   +16 more
core   +4 more sources

Krill: An exploration in underwater sensor networks [PDF]

, 2005
While sensor networks have now become very popular on land, the underwater environment still poses some difficult problems. Communication is one of the difficult challenges under water. There are two options: optical and acoustic.
Chen, P., Corke, Peter, Dunbabin, Matthew, Kotay, K., Overs, Leslie, Rus, Daniela, Sikka, Pavan, Vasilescu, Iuliu   +7 more
core   +3 more sources

High-speed and potentially scalable UWOC/UWB converged transmission link for underwater wireless optical sensor networks

Frontiers in Physics
Underwater wireless optical sensor networks require high-speed, long-range, and scalable underwater wireless optical communication/ultra-wideband hybrid links to enable real-time data transmission and reliable communication between sensors and surface ...
Ammar Armghan, Meshari Alsharari, Khaled Aliqab, Ibrahim Alrashdi, Benish Kanwal, Jawad Mirza, Jawad Mirza, Imran Aziz, Imran Aziz   +8 more
doaj   +1 more source

Demonstration of 12.5 Mslot/s 32-PPM Underwater Wireless Optical Communication System with 0.34 Photons/Bit Receiver Sensitivity

Photonics, 2023
High-capacity, long-distance underwater wireless optical communication (UWOC) technology is an important component in building fast, flexible underwater sensing networks. Underwater communication with light as a carrier has a large communication capacity,
Xiaotian Han, Peng Li, Guangying Li, Chang Chang, Shuaiwei Jia, Zhuang Xie, Peixuan Liao, Wenchao Nie, Xiaoping Xie   +8 more
doaj   +1 more source

Underwater Wireless Optical Communications Using Silicon Photo-Multipliers

IEEE Photonics Journal, 2017
We study the use of Silicon photo-multipliers (SiPMs) for underwater wireless optical communications (UWOC) and discuss their main interests and drawbacks, compared with photo-multiplier tubes. This comparison is mainly based on practical considerations regarding system implementation and the attainable link span.
Khalighi, Mohammad-ali, Hamza, Tasnim, Bourennane, Salah, Leon, Pierre, Opderbecke, Jan   +4 more
openaire   +4 more sources

Parametric hologram optimization for enhanced underwater wireless optical communication

Optics Express, 2022
The performance of the underwater optical communication (UWOC) systems was primarily limited by the low optical transmission efficiency due to the beam divergence and water interference. It has been proved in our previous works that holographic beam shaping can effectively increase the optical transmission efficiency and therefore the communication ...
Jiewen Nie, Lei Tian, Feng Zhang, Xiaobo Li, Haining Yang   +4 more
openaire   +2 more sources

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

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