Publication detail

Optical Digital to Analog Conversion Performance Analysis for Indoor Set-up Conditions

DOBESCH, A. ALVES, L. WILFERT, O. RIBEIRO, C.

Original Title

Optical Digital to Analog Conversion Performance Analysis for Indoor Set-up Conditions

Type

journal article in Web of Science

Language

English

Original Abstract

In visible light communication (VLC) the optical digital to analog conversion (ODAC) approach was proposed as a suitable driving technique able to overcome light-emitting diode's (LED) non-linear characteristic. This concept is analogous to an electrical digital-to-analog converter (EDAC). In other words, digital bits are binary weighted to represent an analog signal. The method supports elementary on-off based modulations able to exploit the essence of LED’s non-linear characteristic allowing simultaneous lighting and communication. In the ODAC concept the reconstruction error does not simply rely upon the converter bit depth as in case of EDAC. It rather depends on communication system set-up and geometrical relation between emitter and receiver as well. The paper describes simulation results presenting the ODAC´s error performance taking into account: the optical channel, the LED's half power angle (HPA) and the receiver field of view (FOV). The set-up under consideration examines indoor conditions for a square room with 4m length and 3m height, operating with one dominant wavelength (blue) and having walls with a reflection coefficient of 0.8. The achieved results reveal that reconstruction error increases for higher data rates as a result of interference due to multipath propagation.

Keywords

LED, VLC, ODAC, optical channel

Authors

DOBESCH, A.; ALVES, L.; WILFERT, O.; RIBEIRO, C.

Released

22. 5. 2017

Publisher

Elsevier B.V.

ISBN

0030-4018

Periodical

Optics Communications

Number

400C

State

Kingdom of the Netherlands

Pages from

115

Pages to

122

Pages count

8

URL

http://www.sciencedirect.com/science/article/pii/S0030401817303929

BibTex

@article{BUT135670,
  author="Aleš {Dobesch} and Luis Nero {Alves} and Otakar {Wilfert} and Carlos Gaspar {Ribeiro}",
  title="Optical Digital to Analog Conversion Performance Analysis for Indoor Set-up Conditions",
  journal="Optics Communications",
  year="2017",
  number="400C",
  pages="115--122",
  doi="10.1016/j.optcom.2017.05.021",
  issn="0030-4018",
  url="http://www.sciencedirect.com/science/article/pii/S0030401817303929"
}