Abstract

The inclusion of organic light emitting diodes (OLEDs) in high-end devices, such as TVs and smart-phones, along with the insertion of cameras embedded in daily use devices, provides the opportunity to establish optical camera communication (OCC) systems based on OLED emitters for Internet of Things (IoT). This Letter presents an experimental demonstration of this OLED-based OCC system for IoT. The results suggest that despite the low emitted power of OLED devices, long range links can be established based on OCC. One outdoor and two indoor scenarios are tested, validating BER below 10 − 6 for short range and give just 3.56 × 10 − 3 for long range links.

Highlights

  • Nowadays, organic light emitting diodes (OLED) have been massively introduced within both the Solid State Lighting (SSL) and the high-resolution displays markets due to their low power consumption and cost-efficient manufacturing process

  • This paper presents an experimental demonstration of this OLED based optical camera communication (OCC) system for Internet of Things (IoT)

  • The results suggest that despite the low emitted power of OLED devices, long range links can be established based on OCC

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Summary

Introduction

Organic light emitting diodes (OLED) have been massively introduced within both the Solid State Lighting (SSL) and the high-resolution displays markets due to their low power consumption and cost-efficient manufacturing process. The idea of using optical camera communication (OCC) systems for IoT based on OLEDs, instead of other traditional VLC schemes already proposed for data transportation in Internet of Things (IoT) networks [7], is presented and experimentally validated In this way, longer distances can be reached for systems that require relatively low data transmission rates (up to 1 kbps). The remaining frames are binarized applying these threshold values, and the obtained B/W image (binary matrix) is projected on a 1D vector by averaging each row This vector is decoded using Eq 1 which calculate the corresponding number of pixels per bit (nbit) in order to acquire the transmitted data. Since there may be sampling frequency offset, the final output takes into account the decimal part of the division, adding one bit when needed

Ny fs
Findings
Conclusion

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