Results 31 to 40 of about 9,329,756 (290)
A High Accuracy Weak Voltage LED Analog Dimming Method
IEEE Access, 2019 A weak voltage analog dimming method for high precision light emitting diode (LED) current control with N-Bits analog static offset calibration (N-Bits ASOC), dynamic offset cancellation (DOC) and K-times dimming duty to voltage (KD2V) conversion is ...
Jiang-Ping He +5 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
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Dimming Control Scheme of Visible Light Communication Based on Joint Multilevel Time-Shifted Coding
, 2022 Dimming control is an essential objection in the signal designing of visible light communication (VLC), which requires improving the communication performance of the system as much as possible while considering the illumination quality.
Qi Wu, Jian Zhang, Lin Li, Jia-Ning Guo
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IEEE Access, 2019 In this paper, a novel modulation scheme called enhanced asymmetrically clipped DC-biased optical OFDM (eADO-OFDM) is proposed to accommodate different demands of multi-users in downlink multiple access for visible light communication systems. Meanwhile,
Xuan Huang +5 more
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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Weight Threshold Check Coding for Dimmable Indoor Visible Light Communication Systems
IEEE Photonics Journal, 2018 To provide energy savings and ecological benefits, dimming control is a crucial factor in indoor visible light communication (VLC) system where desired brightness levels can be achieved.
Yu Zuo +3 more
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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
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Curve-Fitting Correction Method for the Nonlinear Dimming Response of Tunable SSL Devices
Technologies, 2023 Solid-state lighting (SSL) devices are ubiquitous in several markets, including architectural, automotive, healthcare, heritage conservation, and entertainment lighting.
Rugved Kore, Dorukalp Durmus
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Joint Dimming and Data Transmission Optimization for Multi-User Visible Light Communication System
IEEE Access, 2017 Visible light communication (VLC) is regarded as a promising technology for indoor communications due to its safety, availability, and efficiency. By deploying multiple light-emitting diodes (LEDs) at the transmitter, high data rate can be achieved.
Sike Yao +3 more
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A Novel Discrete Dimming Ballast for Linear Fluorescent Lamps [PDF]
, 2009 A novel discrete dimming ballast for linear fluorescent lamps is proposed in this paper. A proposed dimming control circuit is combined with a ballast module for multiple lamps to realize control of three discrete lighting levels.
Stankovic, Ana Vladan +3 more
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