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Design of a Linear-Assisted VLC-LED Transmitter Based on Summing the Light

dc.contributor.authorGarcía Aller, Daniel 
dc.contributor.authorGonzález Lamar, Diego 
dc.contributor.authorFernández Miaja, Pablo 
dc.contributor.authorRodríguez Méndez, Juan 
dc.contributor.authorSebastián Zúñiga, Francisco Javier
dc.descriptionAnnual Conference of the IEEE Industrial Electronics Society (IES) (45th. 2019. Lisboa)spa
dc.description.abstractA high efficiency linear-assisted Visible Light Communication (VLC) LED driver working as a transmitter is presented in this work. A linear-assisted transmitter is based on the idea of using a high efficiency but bandwidth limited circuitry which delivers most of the power and a low efficiency but fast linear amplifier (linear assistance) which corrects the distortion of the signal. The presented solution takes advantage of the light in a VLC system by summing the contribution of the linear amplifier in light instead of electrically, which leads to a electrical isolation between both stages and a reduction of the complexity comparing to the traditional approach used in Envelope Tracking (ET) and Envelope Elimination and Restoration (EER) techniques. As experimental results, the design of a linear-assisted Class E amplifier delivering a 16-PSK phase digital modulation with a 1 MHz carrier is presented. On one hand, the Class E amplifier delivers most of the power (92% of the signal power) at high efficiency (81%) and, on the other hand, the linear amplifier only delivers the error signal at lower efficiency. The efficiency of the signal circuitry is up to 75% and the efficiency of the whole system considering the signal and the LED biasing circuitry is up to 85%spa
dc.description.sponsorshipThis 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 BP17-91spa
dc.relation.ispartofIECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Societyspa
dc.rights© 2019 IEEE
dc.titleDesign of a Linear-Assisted VLC-LED Transmitter Based on Summing the Lighten
dc.typeconference outputspa
dc.relation.projectIDPrincipado de Asturias/IDI-2018-000179
dc.rights.accessRightsopen accessspa

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