Results 71 to 80 of about 256 (125)

Experimental demonstration of 50-m/5-Gbps underwater optical wireless communication with low-complexity chaotic encryption

, 2021
In this paper, a low-complexity two-level chaotic encryption scheme is introduced and experimentally demonstrated to improve the physical layer security of a 450-nm laser underwater optical wireless communication (UOWC) system using discrete Fourier ...
He, Sailing,, Du, Ji,, Fei, Chao,, Chen, Ruilin,, Wang, Yuan,, Zhang, Guowu,, Hong, Xiaojian,   +6 more
core   +1 more source

On Distributed Routing in Underwater Optical Wireless Sensor Networks

, 2018
Underwater optical wireless communication (UOWC) is becoming an attractive technology for underwater wireless sensor networks (UWSNs) since it offers high-speed communication links.
Al-Naffouri, Tareq Y., Dahrouj, Hayssam, Alghamdi, Rawan, Alouini, Mohamed-Slim, Saeed, Nasir   +4 more
core  

Performance Analysis of Relay-Aided NOMA Optical Wireless Communication System in Underwater Turbulence Environment

, 2022
Non-orthogonal multiple access (NOMA) is a promising technology to improve spectrum utilization effectively for underwater optical wireless communications (UOWC).
Xiuyang Ji, Lianyou Jing, Yanjun Liang, Hongxi Yin, Jianying Wang   +4 more
core   +1 more source

Deep learning framework for constellation signal classification in underwater optical wireless communication systems

Underwater optical wireless communication (UOWC) is a nascent technology facilitating communication and data exchange among underwater sensors. However, it faces challenges like limited bandwidth and frequent transmission failures.
Kumar, Naresh, Garg, Amit, Chauhan, Dushyant Singh, Maurya, Arun, Bisla, Nidhi, Singh, Deepali   +5 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

Modeling and performance analysis of multihop underwater optical wireless sensor networks

, 2018
Underwater optical wireless networks (UOWNs) have recently gained attention as an emerging solution to the growing demand for broadband connectivity. Even though it is an alternative to low-bandwidth and high-latency acoustic systems, underwater optical ...
Al-Naffouri, Tareq Y., Alouini, Mohamed-Slim, Saeed, Nasir, Celik, Abdulkadir   +3 more
core   +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

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