An Energy Efficient High-speed Digital LED Driver for Visible Light Communications

Aravind Venugopalan Jalajakumari Nair; Katherine Cameron; Dobroslav Tsonev; Harald Haas; Robert Henderson

doi:10.1109/ICC.2015.7249125

An Energy Efficient High-speed Digital LED Driver for Visible Light Communications

Aravind Venugopalan Jalajakumari Nair, Katherine Cameron, Dobroslav Tsonev, Harald Haas, Robert Henderson

School of Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract / Description of output

In this paper an energy efficient light emitting diode (LED) driver circuit for visible light communications (VLC) and results from the electrical and optical characterization are presented. A current steering digital to analogue converter (DAC) based LED driver circuit supporting 4-channels with an 8-bit resolution is realized in a 0.18 μm complimentary metal oxide semiconductor (CMOS) technology. Each channel delivers a full-scale current of 255 mA and achieves up to 67% electrical efficiency when driving 250 MS/s orthogonal frequency division multiplexing (OFDM) signals. Optical differential drive capability is demonstrated by using two output branches of a single channel to drive two different LEDs with an SNR improvement (>5 dB). The chip is also capable of full digital control of color shift keying (CSK) using multi-color LEDs enabling lighting color-temperature adjustment, dimming and multiple-input and multiple-output (MIMO) optical communications and these aspects will be the subject of future research. Keywords

Original language	English
Pages	5054-5059
Number of pages	6
DOIs	https://doi.org/10.1109/ICC.2015.7249125
Publication status	Published - 8 Jun 2015
Event	2015 IEEE International Conference on Communications (ICC) - London, United Kingdom Duration: 8 Jun 2015 → 12 Jun 2015

Conference

Conference	2015 IEEE International Conference on Communications (ICC)
Country/Territory	United Kingdom
City	London
Period	8/06/15 → 12/06/15

Access to Document

10.1109/ICC.2015.7249125

TACKILING THE LOOMING SPECTRUM CRISIS IN WIRELESS COMMUNICATION
Haas, H.
EPSRC
1/03/13 → 28/02/18
Project: Research
UPVLC: Ultra-parallel visible light communications (UP-VLC)
Haas, H. & Henderson, R.
Other
1/10/12 → 28/02/17
Project: Research

Cite this

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title = "An Energy Efficient High-speed Digital LED Driver for Visible Light Communications",

abstract = "In this paper an energy efficient light emitting diode (LED) driver circuit for visible light communications (VLC) and results from the electrical and optical characterization are presented. A current steering digital to analogue converter (DAC) based LED driver circuit supporting 4-channels with an 8-bit resolution is realized in a 0.18 μm complimentary metal oxide semiconductor (CMOS) technology. Each channel delivers a full-scale current of 255 mA and achieves up to 67% electrical efficiency when driving 250 MS/s orthogonal frequency division multiplexing (OFDM) signals. Optical differential drive capability is demonstrated by using two output branches of a single channel to drive two different LEDs with an SNR improvement (>5 dB). The chip is also capable of full digital control of color shift keying (CSK) using multi-color LEDs enabling lighting color-temperature adjustment, dimming and multiple-input and multiple-output (MIMO) optical communications and these aspects will be the subject of future research. Keywords",

author = "{Venugopalan Jalajakumari Nair}, Aravind and Katherine Cameron and Dobroslav Tsonev and Harald Haas and Robert Henderson",

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doi = "10.1109/ICC.2015.7249125",

language = "English",

pages = "5054--5059",

note = "2015 IEEE International Conference on Communications (ICC) ; Conference date: 08-06-2015 Through 12-06-2015",

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AU - Venugopalan Jalajakumari Nair, Aravind

AU - Cameron, Katherine

AU - Tsonev, Dobroslav

AU - Haas, Harald

AU - Henderson, Robert

PY - 2015/6/8

Y1 - 2015/6/8

N2 - In this paper an energy efficient light emitting diode (LED) driver circuit for visible light communications (VLC) and results from the electrical and optical characterization are presented. A current steering digital to analogue converter (DAC) based LED driver circuit supporting 4-channels with an 8-bit resolution is realized in a 0.18 μm complimentary metal oxide semiconductor (CMOS) technology. Each channel delivers a full-scale current of 255 mA and achieves up to 67% electrical efficiency when driving 250 MS/s orthogonal frequency division multiplexing (OFDM) signals. Optical differential drive capability is demonstrated by using two output branches of a single channel to drive two different LEDs with an SNR improvement (>5 dB). The chip is also capable of full digital control of color shift keying (CSK) using multi-color LEDs enabling lighting color-temperature adjustment, dimming and multiple-input and multiple-output (MIMO) optical communications and these aspects will be the subject of future research. Keywords

AB - In this paper an energy efficient light emitting diode (LED) driver circuit for visible light communications (VLC) and results from the electrical and optical characterization are presented. A current steering digital to analogue converter (DAC) based LED driver circuit supporting 4-channels with an 8-bit resolution is realized in a 0.18 μm complimentary metal oxide semiconductor (CMOS) technology. Each channel delivers a full-scale current of 255 mA and achieves up to 67% electrical efficiency when driving 250 MS/s orthogonal frequency division multiplexing (OFDM) signals. Optical differential drive capability is demonstrated by using two output branches of a single channel to drive two different LEDs with an SNR improvement (>5 dB). The chip is also capable of full digital control of color shift keying (CSK) using multi-color LEDs enabling lighting color-temperature adjustment, dimming and multiple-input and multiple-output (MIMO) optical communications and these aspects will be the subject of future research. Keywords

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M3 - Paper

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An Energy Efficient High-speed Digital LED Driver for Visible Light Communications

Abstract / Description of output

Conference

Access to Document

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Projects

TACKILING THE LOOMING SPECTRUM CRISIS IN WIRELESS COMMUNICATION

UPVLC: Ultra-parallel visible light communications (UP-VLC)

Cite this