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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/44514

Title: Reproducing single-carrier digital modulation schemes for VLC by controlling the first switching harmonic of the dc-dc power converter output voltage ripple
Author(s): Rodríguez Méndez, Juan
Fernández Miaja, Pablo
González Lamar, Diego
Sebastián Zúñiga, Francisco Javier
Keywords: Two-phase buck converter
Quadrature Amplitude Modulation (QAM)
Carrier-less Amplitude and Phase modulation (CAP)
Amplitude-Shift Keying (ASK)
Issue date: 2018
Publisher: IEEE
Publisher version: http://dx.doi.org/10.1109/TPEL.2017.2774178
Citation: IEEE Transactions on Power Electronics (2018); doi:10.1109/TPEL.2017.2774178
Abstract: A DC-DC power converter based on a two-phase synchronous buck converter that reproduces single-carrier digital modulation schemes by controlling the first switching harmonic of the output voltage ripple is presented in this work. The DC-DC power converter carries out both the lighting and the transmission functionalities of Visible Light Communication (VLC) transmitters. Control of both the amplitude and the phase of sinusoidal currents injected towards High-Brightness LEDs (HB-LEDs) enables the use of efficient modulation schemes such as Quadrature Amplitude Modulation (QAM), Carrier-less Amplitude and Phase modulation (CAP), Amplitude-Shift Keying (ASK) and Phase-Shift Keying (PSK). These modulation schemes achieve higher spectral efficiency (i.e. more data can be transmitted using the same bandwidth) than previously proposed modulation schemes performed by VLC transmitters based on the use of DC-DC power converters. To the author's knowledge, the ratio between the bit rate achieved and the switching frequency of the DC-DC power converter presented in this paper is the highest that can be found in literature
URI: http://hdl.handle.net/10651/44514
ISSN: 1941-0107
0885-8993
Sponsored: This work has been supported by the Spanish Government under the Project MINECO-17-DPI2016-75760-R, the scholarship FPU14/03268 and the Principality of Asturias under the Project FC-15- GRUPIN14-143 and by European Regional Development Fund (ERDF) grants
Project id.: MINECO/17-DPI2016-75760-R
FPU14/03268
FC-15- GRUPIN14-143
Appears in Collections:Artículos
Ingeniería Eléctrica, Electrónica, de Computadores y Sistemas
Investigaciones y Documentos OpenAIRE

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