Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system

Fahad Zafar; Vineetha Kalavally; Masuduzzaman Bakaul; Rajendran Parthiban

doi:10.1117/12.2187367

Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system

Fahad Zafar, Vineetha Kalavally, Masuduzzaman Bakaul, Rajendran Parthiban

Malaysia School of Engineering

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

3 Citations (Scopus)

Abstract

For making commercial implementation of light emitting diode (LED) based visible light communication (VLC) systems feasible, it is necessary to incorporate it with dimming schemes which will provide energy savings, moods and increase the aesthetic value of the places using this technology. There are two general methods which are used to dim LEDs commonly categorized as analog and digital dimming. Incorporating fast data transmission with these techniques is a key challenge in VLC. In this paper, digital and analog dimming for a 10 Mb/s non return to zero on-off keying (NRZ-OOK) based VLC system is experimentally investigated considering both photometric and communicative parameters. A spectrophotometer was used for photometric analysis and a line of sight (LOS) configuration in the presence of ambient light was used for analyzing communication parameters. Based on the experimental results, it was determined that digital dimming scheme is preferable for use in indoor VLC systems requiring high dimming precision and data transmission at lower brightness levels. On the other hand, analog dimming scheme is a cost effective solution for high speed systems where dimming precision is insignificant.

Original language	English
Title of host publication	Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems
Editors	Matthew H Kane, Jianzhong Jiao, Nikolaus Dietz, Jian-Jang Huang
Place of Publication	Washington USA
Publisher	SPIE - International Society for Optical Engineering
Pages	1 - 8
Number of pages	8
Volume	9571
ISBN (Print)	9781628417371
DOIs	https://doi.org/10.1117/12.2187367
Publication status	Published - 2015
Event	International Conference on Solid State Lighting and LED-based Illumination Systems 2015 - San Diego, United States of America Duration: 12 Aug 2015 → 13 Aug 2015 Conference number: 14th https://spie.org/Publications/Proceedings/Volume/9571?SSO=1 (Proceedings)

Conference

Conference	International Conference on Solid State Lighting and LED-based Illumination Systems 2015
Country/Territory	United States of America
City	San Diego
Period	12/08/15 → 13/08/15
Internet address	https://spie.org/Publications/Proceedings/Volume/9571?SSO=1 (Proceedings)

Access to Document

10.1117/12.2187367

Cite this

Zafar, F., Kalavally, V., Bakaul, M., & Parthiban, R. (2015). Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system. In M. H. Kane, J. Jiao, N. Dietz, & J.-J. Huang (Eds.), Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems (Vol. 9571, pp. 1 - 8). SPIE - International Society for Optical Engineering. https://doi.org/10.1117/12.2187367

Zafar, Fahad ; Kalavally, Vineetha ; Bakaul, Masuduzzaman et al. / Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system. Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems. editor / Matthew H Kane ; Jianzhong Jiao ; Nikolaus Dietz ; Jian-Jang Huang. Vol. 9571 Washington USA : SPIE - International Society for Optical Engineering, 2015. pp. 1 - 8

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title = "Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system",

abstract = "For making commercial implementation of light emitting diode (LED) based visible light communication (VLC) systems feasible, it is necessary to incorporate it with dimming schemes which will provide energy savings, moods and increase the aesthetic value of the places using this technology. There are two general methods which are used to dim LEDs commonly categorized as analog and digital dimming. Incorporating fast data transmission with these techniques is a key challenge in VLC. In this paper, digital and analog dimming for a 10 Mb/s non return to zero on-off keying (NRZ-OOK) based VLC system is experimentally investigated considering both photometric and communicative parameters. A spectrophotometer was used for photometric analysis and a line of sight (LOS) configuration in the presence of ambient light was used for analyzing communication parameters. Based on the experimental results, it was determined that digital dimming scheme is preferable for use in indoor VLC systems requiring high dimming precision and data transmission at lower brightness levels. On the other hand, analog dimming scheme is a cost effective solution for high speed systems where dimming precision is insignificant.",

author = "Fahad Zafar and Vineetha Kalavally and Masuduzzaman Bakaul and Rajendran Parthiban",

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Zafar, F, Kalavally, V, Bakaul, M & Parthiban, R 2015, Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system. in MH Kane, J Jiao, N Dietz & J-J Huang (eds), Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems. vol. 9571, SPIE - International Society for Optical Engineering, Washington USA, pp. 1 - 8, International Conference on Solid State Lighting and LED-based Illumination Systems 2015, San Diego, California, United States of America, 12/08/15. https://doi.org/10.1117/12.2187367

Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system. / Zafar, Fahad; Kalavally, Vineetha; Bakaul, Masuduzzaman et al.
Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems. ed. / Matthew H Kane; Jianzhong Jiao; Nikolaus Dietz; Jian-Jang Huang. Vol. 9571 Washington USA: SPIE - International Society for Optical Engineering, 2015. p. 1 - 8.

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

TY - GEN

T1 - Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system

AU - Zafar, Fahad

AU - Kalavally, Vineetha

AU - Bakaul, Masuduzzaman

AU - Parthiban, Rajendran

N1 - Conference code: 14th

PY - 2015

Y1 - 2015

N2 - For making commercial implementation of light emitting diode (LED) based visible light communication (VLC) systems feasible, it is necessary to incorporate it with dimming schemes which will provide energy savings, moods and increase the aesthetic value of the places using this technology. There are two general methods which are used to dim LEDs commonly categorized as analog and digital dimming. Incorporating fast data transmission with these techniques is a key challenge in VLC. In this paper, digital and analog dimming for a 10 Mb/s non return to zero on-off keying (NRZ-OOK) based VLC system is experimentally investigated considering both photometric and communicative parameters. A spectrophotometer was used for photometric analysis and a line of sight (LOS) configuration in the presence of ambient light was used for analyzing communication parameters. Based on the experimental results, it was determined that digital dimming scheme is preferable for use in indoor VLC systems requiring high dimming precision and data transmission at lower brightness levels. On the other hand, analog dimming scheme is a cost effective solution for high speed systems where dimming precision is insignificant.

AB - For making commercial implementation of light emitting diode (LED) based visible light communication (VLC) systems feasible, it is necessary to incorporate it with dimming schemes which will provide energy savings, moods and increase the aesthetic value of the places using this technology. There are two general methods which are used to dim LEDs commonly categorized as analog and digital dimming. Incorporating fast data transmission with these techniques is a key challenge in VLC. In this paper, digital and analog dimming for a 10 Mb/s non return to zero on-off keying (NRZ-OOK) based VLC system is experimentally investigated considering both photometric and communicative parameters. A spectrophotometer was used for photometric analysis and a line of sight (LOS) configuration in the presence of ambient light was used for analyzing communication parameters. Based on the experimental results, it was determined that digital dimming scheme is preferable for use in indoor VLC systems requiring high dimming precision and data transmission at lower brightness levels. On the other hand, analog dimming scheme is a cost effective solution for high speed systems where dimming precision is insignificant.

U2 - 10.1117/12.2187367

DO - 10.1117/12.2187367

M3 - Conference Paper

SN - 9781628417371

VL - 9571

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EP - 8

BT - Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems

A2 - Kane, Matthew H

A2 - Jiao, Jianzhong

A2 - Dietz, Nikolaus

A2 - Huang, Jian-Jang

PB - SPIE - International Society for Optical Engineering

CY - Washington USA

T2 - International Conference on Solid State Lighting and LED-based Illumination Systems 2015

Y2 - 12 August 2015 through 13 August 2015

ER -

Zafar F, Kalavally V, Bakaul M, Parthiban R. Experimental investigation of analog and digital dimming techniques on photometric performance of an indoor Visible Light Communication (VLC) system. In Kane MH, Jiao J, Dietz N, Huang JJ, editors, Proceedings of SPIE: Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems. Vol. 9571. Washington USA: SPIE - International Society for Optical Engineering. 2015. p. 1 - 8 doi: 10.1117/12.2187367