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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/53602

Title: Taking advantage of the sum of the light in outphasing technique for visible light communication transmitter
Author(s): García Aller, Daniel
González Lamar, Diego
Fernández Miaja, Pablo
Rodríguez Méndez, Juan
Sebastián Zúñiga, Francisco Javier
Keywords: Visible Light Communication (VLC)
Wireless Communication
High-brightness LEDs (HB-LEDs)
Class E Amplifier
Issue date: 2020
Publisher: IEEE
Publisher version: http://dx.doi.org/10.1109/JESTPE.2020.2965774
Citation: IEEE Journal of Emerging and Selected Topics in Power Electronics, 14(8), (2020); doi:10.1109/JESTPE.2020.2965774
Abstract: Visible Light Communication (VLC) takes advantage of the widespread use of the LEDs, and by modifying the driver stage, the LEDs are capable of lighting and transmitting information. One of the main drawbacks is the low power efficiency due to the modification of the LED driver stage in order to add the communication capability. Most of the research work related to VLC is towards the communication task, whereas there is a limited work about the improvement on the power efficiency. This paper proposes a high efficiency LED driver for VLC working as a transmitter based on the outphasing technique. This technique is used also in RF communications and increases the efficiency of the amplifiers. The proposed transmitter is made up of two switching-mode power amplifiers that reproduce the signals required for the outphasing technique and a DC/DC converter that biases the LEDs. The proposal exploits the light and, instead of being added electrically, the signals are added in their light form, which leads to a reduction in the complexity of the design. As experimental results, a transmitter was built of two Class E amplifiers reproducing a 16-QAM modulation, achieving a signal-generation efficiency of 78% and an overall efficiency of 92%
URI: http://hdl.handle.net/10651/53602
ISSN: 2168-6777
Sponsored: This work was supported in part by European Regional Development Fund grants, in part by the Spanish Government under project MINECO-17- DPI2016-75760-R, and in part by the Principality of Asturias under project IDI/2018/000179 and scholarship BP17-91
Project id.: MINECO/17- DPI2016-75760-R
Principado de Asturias/IDI-2018/000179
Appears in Collections:Artículos
Ingeniería Eléctrica, Electrónica, de Computadores y Sistemas
Investigaciones y Documentos OpenAIRE

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