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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/46450

Title: Efficient Visible Light Communication Transmitters Based on Switching-Mode dc-dc Converters
Author(s): Rodríguez Méndez, Juan
González Lamar, Diego
García Aller, Daniel
Fernández Miaja, Pablo
Sebastián Zúñiga, Francisco Javier
Keywords: Visible light communication (VLC)
Light emitting diode (LED)
Switching-mode dc-to-dc converter (SMCdc-dc)
Issue date: 2018
Publisher: MDPI
Publisher version: http://dx.doi.org/10.3390/s18041127
Citation: Sensors, 18(4), (2018); doi:10.3390/s18041127
Format extent: 18 p.
Abstract: Visible light communication (VLC) based on solid-state lighting (SSL) is a promising option either to supplement or to substitute existing radio frequency (RF) wireless communication in indoor environments. VLC systems take advantage of the fast modulation of the visible light that light emitting diodes (LEDs) enable. The switching-mode dc-to-dc converter (SMCdc-dc) must be the cornerstone of the LED driver of VLC transmitters in order to incorporate the communication functionality into LED lighting, keeping high power efficiency. However, the new requirements related to the communication, especially the high bandwidth that the LED driver must achieve, converts the design of the SMCdc-dc into a very challenging task. In this work, three different methods for achieving such a high bandwidth with an SMCdc-dc are presented: increasing the order of the SMCdc-dc output filter, increasing the number of voltage inputs, and increasing the number of phases. These three strategies are combinable and the optimum design depends on the particular VLC application, which determines the requirements of the VLC transmitter. As an example, an experimental VLC transmitter based on a two-phase buck converter with a fourth-order output filter will demonstrate that a bandwidth of several hundred kilohertz (kHz) can be achieved with output power levels close to 10Wand power efficiencies between 85% and 90%. In conclusion, the design strategy presented allows us to incorporate VLC into SSL, achieving high bit rates without damaging the power efficiency of LED lighting
URI: http://hdl.handle.net/10651/46450
ISSN: 1424-8220
Sponsored: This work has been supported by the Spanish Government under Project MINECO-15-DPI2014-56358-JIN, the scholarship FPU14/03268 and the Principality of Asturias under the Project SV-PA-17-RIS3-4 and by European Regional Development Fund (ERDF) grants
Project id.: MINECO/15-DPI2014-56358-JIN
Principado de Asturias-FEDER/SV-PA-17-RIS3-4
Appears in Collections:Artículos
Ingeniería Eléctrica, Electrónica, de Computadores y Sistemas
Investigaciones y Documentos OpenAIRE

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