An alternative dichromatic white LED light source for OOK-NRZ visible light communication system

A. A. Ngr Arymurti Santosa; Agus Muhamad Hatta; Sasono Rahardjo

doi:10.1117/12.2586970

12 March 2021 An alternative dichromatic white LED light source for OOK-NRZ visible light communication system

A. A. Ngr Arymurti Santosa, Agus Muhamad Hatta, Sasono Rahardjo

Proceedings Volume 11789, Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020); 117890N (2021) https://doi.org/10.1117/12.2586970
Event: Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020), 2020, Sanur, Indonesia

Abstract

A Visible Light Communication (VLC) transmitter that can transmit data efficiently without utilizing a blue optical filter is needed while also be able to produce high color and excellent lighting performance. A dichromatic LED configuration consisting of a data transmitter (Blue LED/Red LED) and illumination light source (LED Lime) is modulated with OOKNRZ signal and then compared to traditional LED Transmitters. From a lighting perspective, Lime-Red and Lime-Blue WLED configuration can achieve Color Rendering Index (CRI) value of 81.8 and 76.4 respectively, compared to the highest CRI value of RGB WLED that is 74.5. From a communication perspective, Lime-Red and Lime-Blue WLED can achieve data rate of 1.31 Mbps (red modulated) and 1.28 Mbps (blue modulated) compared to data rate of 1.09 Mbps by traditional Phosphorous Cool White LED. Lime-Red and Lime-Blue WLED does not have the bandwidth limitation that is prevalent in Phosphorous White LEDs, which makes these 2 configurations able to trespass the traditional data rate limit without the use of blue optical filter. Thus, by only using 2 LEDs, VLC transmitters with high CRIs, and capability of transmitting a high data rate without the use of blue optical filter is obtained.

Citation Download Citation

A. A. Ngr Arymurti Santosa, Agus Muhamad Hatta, and Sasono Rahardjo "An alternative dichromatic white LED light source for OOK-NRZ visible light communication system", Proc. SPIE 11789, Fourth International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2020), 117890N (12 March 2021); https://doi.org/10.1117/12.2586970

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