Selection of high power LEDs for Li-Fi applications

Mostafa H. Ahfayd, Zohaib A. Farhat, Martin J.N. Sibley, Peter J. Mather, P. I. Lazaridis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This work is concerned with a comparison between commercial available high-power LEDs, which have the same chip size but different power ratings (20 W, 30 W and 50 W), to find the most appropriate for Li-Fi applications, in terms of bandwidth before and after bandwidth extension. Two basic types of commercial LEDs were compared ('cool' and 'warm'), where the bandwidth of both types was in the range of 3 to 4 MHz, for all power values. After bandwidth extension, there was a marked disparity in the bandwidth between the several types, where the bandwidth increased to approximately 17 MHz for the 'warm', 33 MHz for the 50 W 'cool' and 36 MHz for 20 W and 30 W 'cool' LEDs. The bandwidth extended LEDs were implemented for a Li-Fi application based on offset PPM modulation transmission scheme at a rate of 13 Mbps. It was found that 'cool' LEDs have a more favourable performance than 'warm' LEDs in terms of data transmission and bit error rate (BER). Additionally, 20 W and 30 W LEDs have achieved a lower BER than the 50 W.

Original languageEnglish
Title of host publication2018 25th International Conference on Telecommunications, ICT 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages170-174
Number of pages5
ISBN (Print)9781538623213
DOIs
Publication statusPublished - 13 Sep 2018
Event25th International Conference on Telecommunications - Palais du Grand Large, Saint Malo, France
Duration: 26 Jun 201828 Jun 2018
Conference number: 25
http://ict-2018.org/ (Link to Conference Website)

Conference

Conference25th International Conference on Telecommunications
Abbreviated titleICT 2018
CountryFrance
CitySaint Malo
Period26/06/1828/06/18
Internet address

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  • Cite this

    Ahfayd, M. H., Farhat, Z. A., Sibley, M. J. N., Mather, P. J., & Lazaridis, P. I. (2018). Selection of high power LEDs for Li-Fi applications. In 2018 25th International Conference on Telecommunications, ICT 2018 (pp. 170-174). [8464902] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICT.2018.8464902