Underwater optical wireless communications : depth dependent variations in attenuation [PDF]
, 2013 Depth variations in the attenuation coefficient for light in the ocean were calculated using a one-parameter model based on the chlorophyll-a concentration Cc and experimentally-determined Gaussian chlorophyll-depth profiles.
Green, Roger +2 more
core +1 more source
Towards underwater coherent optical wireless communications using a simplified detection scheme.
Optics Express, 2021 In this paper, an effective method of underwater coherent optical wireless communication (UCOWC) with a simplified detection scheme is proposed. The proof-of-concept experiments with M-ary PSK have been conducted with a common laser used for the signal ...
Xinke Tang +7 more
semanticscholar +1 more source
Asymptotic analysis of V-BLAST MIMO for coherent optical wireless communications in Gamma-Gamma turbulence [PDF]
, 2018 This paper investigates the asymptotic BER performance of coherent optical wireless communication systems in Gamma-Gamma turbulence when applying the V-BLAST MIMO scheme. A new method is proposed to quantify the performance of the system and mathematical
Gao, Chao +3 more
core +1 more source
A cross-layer heuristic algorithm for addressing shadowing problem in optical attocell networks [PDF]
, 2020 The performance of visible light communication (VLC)-based optical attocell networks degrades due to shadowing caused by opaque objects. In order to improve reliability, we propose a cross-layer algorithm to find the optimal routing and resource ...
Colle, Didier +2 more
core +1 more source
Investigation of the Scattering Noise in Underwater Optical Wireless Communications
The Scientist, 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.
Behnaz Majlesein +2 more
semanticscholar +1 more source
IEEE Photonics Journal, 2021 In this paper, we establish a water-to-air (W2A) visible light communication (VLC) link using green light emitting diode (LED), and investigate the coverage characteristics of the designed W2A-VLC link under calm and wavy water conditions.
Tianrui Lin +4 more
doaj +1 more source
Optimal Transmission of VLC System in the Presence of LED Nonlinearity and APD Module Saturation
IEEE Photonics Journal, 2018 We address the optimal transmission of LED-based visible light communication (VLC) system using direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) modulation and avalanche photodiode (APD) receiver.
Meijun Gao, Chao Li, Zhengyuan Xu
doaj +1 more source
Enhanced System Acquisition for NB-IoT
IEEE Access, 2017 Machine-type communication (MTC) is the key technology to support data transfer among devices (sensors and actuators) in Internet of Things (IoT).
Wenjie Yang +6 more
doaj +1 more source
Multipath Extraction Based UL/DL Channel Estimation for FDD Massive MIMO-OFDM Systems
IEEE Access, 2021 In this paper, we propose a multipath extraction based uplink/downlink channel estimation scheme for wideband massive multiple-input multiple-output (MIMO) systems, where orthogonal frequency division multiplexing (OFDM) is adopted and the beam squint ...
Wei Ji, Feng Zhang, Ling Qiu
doaj +1 more source
Scattering regimes for underwater optical wireless communications using Monte Carlo simulation [PDF]
, 2018 Optical wireless communications has shown tremendous potential for underwater applications as it can provide higher bandwidth and better security compared to acoustic technologies.
Ahmad, Zahir +3 more
core +3 more sources