Results 41 to 50 of about 785 (180)
Turbulence is an intractable issue for underwater optical wireless communication (UOWC). In this paper, the effects of temperature-induced turbulence on the UOWC system with correlated single-input multiple-output (SIMO) channel are comprehensively ...
Weijie Liu +3 more
doaj +1 more source
The most significant challenge of underwater optical wireless communication (UOWC) system is to overcome its limited coverage. To expand the achievable communication range, we investigate the performance of the dual-hop UOWC system with simultaneous ...
Kuan Ye, Cong Zou, Fang Yang
doaj +1 more source
Experimental Demonstration of Non-Hermitian Symmetry for DC-SC-FDM in UOWC Systems
This study demonstrates the high spectrum efficiency of DC offset single-carrier frequency division multiplexing (DC-SC-FDM) for underwater optical wireless communications (UOWC). I and Q components were separately transmitted using dual lasers.
Masanori, Hanawa +2 more
core +1 more source
Performance Analysis of the LDPC‐Coded Hybrid LQAM‐MPPM for UWOC Systems
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 +6 more
wiley +1 more source
Underwater Optical Wireless Communication
Underwater wireless information transfer is of great interest to the military, industry, and the scientific community, as it plays an important role in tactical surveillance, pollution monitoring, oil control and maintenance, offshore explorations ...
Hemani Kaushal, Georges Kaddoum
doaj +1 more source
Reliability of Spectrum-Efficient Mixed Satellite-Underwater Systems
The combination of radio-frequency (RF) communication and underwater optical wireless communication (UOWC) plays a vital role in the underwater Internet of Things (UIoT).
Christina Gamal +6 more
doaj +1 more source
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 +7 more
wiley +1 more source
Channel Characterisation for Underwater Optical Wireless Vertical Links
We describe depth‐dependent effects in underwater optical wireless links using optical technology. We compute attenuation and power losses in vertical underwater links and evaluate the available bandwidth in an underwater channel based on the transmission of visible light.
Alessandro Ugolini +3 more
wiley +1 more source
Investigation of the Scattering Noise in Underwater Optical Wireless Communications
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.
Behnaz Majlesein +2 more
doaj +1 more source
Closed Form Expressions for Underwater‐RF System Over Decode‐Forward Relaying
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 +5 more
wiley +1 more source

