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

doi:10.1109/ICT.2018.8464902

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 proceeding › Conference contribution › peer-review

3 Citations (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 language	English
Title of host publication	2018 25th International Conference on Telecommunications, ICT 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	170-174
Number of pages	5
ISBN (Print)	9781538623213
DOIs	https://doi.org/10.1109/ICT.2018.8464902
Publication status	Published - 13 Sep 2018
Event	25th International Conference on Telecommunications - Palais du Grand Large, Saint Malo, France Duration: 26 Jun 2018 → 28 Jun 2018 Conference number: 25 http://ict-2018.org/ (Link to Conference Website)

Conference

Conference	25th International Conference on Telecommunications
Abbreviated title	ICT 2018
Country/Territory	France
City	Saint Malo
Period	26/06/18 → 28/06/18
Internet address	http://ict-2018.org/ (Link to Conference Website)

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Cite this

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title = "Selection of high power LEDs for Li-Fi applications",

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.",

keywords = "bandwidth, commercial LEDs, communication, frequency response, Li-Fi",

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Ahfayd, MH, Farhat, ZA, Sibley, MJN, Mather, PJ & Lazaridis, PI 2018, Selection of high power LEDs for Li-Fi applications. in 2018 25th International Conference on Telecommunications, ICT 2018., 8464902, Institute of Electrical and Electronics Engineers Inc., pp. 170-174, 25th International Conference on Telecommunications, Saint Malo, France, 26/06/18. https://doi.org/10.1109/ICT.2018.8464902

Selection of high power LEDs for Li-Fi applications. / Ahfayd, Mostafa H.; Farhat, Zohaib A.; Sibley, Martin J.N. et al.

2018 25th International Conference on Telecommunications, ICT 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 170-174 8464902.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Lazaridis, P. I.

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N2 - 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.

AB - 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.

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Selection of high power LEDs for Li-Fi applications

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