Constraints on drivers for visible light communications emitters based on energy efficiency

被引：13

作者：

del Campo-Jimenez, Guillermo ^{[1
]}

Perez-Jimenez, Rafael ^{[2
]}

Jose Lopez-Hernandez, Francisco ^{[1
]}

机构：

[1] CeDInt UPM, Campus Montegancedo Sn, Madrid 28223, Spain

[2] IDETIC ULPGC, Parque Cient Tarifa,Ed Polivalente II, Las Palmas Gran Canaria 35017, Spain

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 09期

关键词：

OFDM;

D O I：

10.1364/OE.24.009994

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work we analyze the energy efficiency constraints on drivers for Visible light communication (VLC) emitters. This is the main reason why LED is becoming the main source of illumination. We study the effect of the waveform shape and the modulation techniques on the overall energy efficiency of an LED lamp. For a similar level of illumination, we calculate the emitter energy efficiency ratio eta (P-LED/P-TOTAL) for different signals. We compare switched and sinusoidal signals and analyze the effect of both OOK and OFDM modulation techniques depending on the power supply adjustment, level of illumination and signal amplitude distortion. Switched and OOK signals present higher energy efficiency behaviors (0.86 <=eta <= 0.95) than sinusoidal and OFDM signals (0.53 <=eta <= 0.79). (C) 2016 Optical Society of America

引用

页码：9994 / 9999

页数：6

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