Results 21 to 30 of about 11,028,576 (294)
Constant Weight Space-Time Codes for Dimmable MIMO-VLC Systems
IEEE Photonics Journal, 2020 Visible light communication(VLC), which combines communication and illumination, is regarded as a potential wireless communication. For illumination requirements of VLC systems, dimming control is a significant function.
Jia-Ning Guo +4 more
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Bumblebees Perform Well-Controlled Landings in Dim Light [PDF]
Frontiers in Behavioral Neuroscience, 2016 To make a smooth touchdown when landing, an insect must be able to reliably control its approach speed as well as its body and leg position-behaviors that are thought to be regulated primarily by visual information. Bumblebees forage and land under a broad range of light intensities and while their behavior during the final moments of landing has been ...
Reber, Therese +3 more
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HYBRID DIMMING CONTROL FOR BOTH PWM AND AUX [PDF]
, 2020 Both PWM and AUX dimming control techniques are implemented in a single firmware set for an eDP (embedded display port) LCD panel to allow the panel to work with graphics vendors using either dimming ...
INC, HP
core +1 more source
Distributed dimming control for LED lighting
Optics Express, 2013 This paper presents a distributed energy-saving lighting strategy for the arrangements of a lighting network consisting of a group of light-emitting diode (LED) lamps and users. LED lamps have a dimming support feature to meet the illuminance requirements imposed by individual users. Both groups interact with each other via visible light communication (
Lee, Sang Hyun, Kwon, Jae Kyun
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IEEE Access, 2018 We design a hybrid visible light (VL) and infrared (IR) data transmission scheme for indoor visible light communication (VLC) systems with multi-pulse position modulation (MPPM) dimming control.
Xiaodi You, Jian Chen, Changyuan Yu
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A Novel Coding Based Dimming Scheme with Constant Transmission Efficiency in VLC Systems
Applied Sciences, 2019 Visible light communication (VLC) has attracted tremendous attention due to two functions: communication and illumination. Both reliable data transmission and lighting quality need to be considered when the transmitted signal is designed.
Yu Zuo, Jian Zhang
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China's dimming and brightening: evidence, causes and hydrological implications [PDF]
Annales Geophysicae, 2014 There is growing evidence that, corresponding to global dimming and brightening, surface solar radiation and sunshine hours over China have undergone decadal fluctuations during the 1960s–2000s.
Y. W. Wang, Y. W. Wang, Y. H. Yang
doaj +1 more source
IEEE Open Journal of the Communications Society, 2021 Visible light communication (VLC) is being envisioned as an enabling technology to provide the much-needed spectral relief for the ever-increasing demand for Internet connectivity and data consumption.
Rishu Raj, Sonu Jaiswal, Abhishek Dixit
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Efficient Data Transmission Using MPPM Dimming Control in Indoor Visible Light Communication
IEEE Photonics Journal, 2015 In conventional visible light communication (VLC) dimming control systems utilizing pulse width modulation (PWM), reducing the duty cycle will push up the receiver sensitivity requirement if the transmission rate is kept constant.
Xiaodi You +3 more
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An Economic analysis of the Luminaire-Level control of LED lighting in small office
Journal of Asian Architecture and Building Engineering, 2022 The objective of this study is to perform an economic analysis of the luminaire-level control of LED lighting in a small office. For this, energy consumption and illuminance were measured for one year in a space where the luminaire-level controller of ...
Hye-Jin Kim, in-Ho Yang
doaj +1 more source