Optimising OFDM based visible light communication for high throughput and reduced PAPR

Waisu Popoola; Zabih Ghassemlooy; Brian Stewart

doi:10.1109/ICCW.2015.7247361

Optimising OFDM based visible light communication for high throughput and reduced PAPR

Waisu Popoola, Zabih Ghassemlooy, Brian Stewart

SCEBE School Office

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

Abstract

In order to circumvent the throughput limitation imposed on visible light communication (VLC) systems by the limited LED bandwidth, optical orthogonal frequency division multiplexing (OFDM) with non-uniform bit-loading is studied in this paper. By using lower order modulation on subcarriers that suffer the most distortion, we show that it is possible to establish a high throughput and reliable OFDM based VLC link at a sampling rate of six times the available system bandwidth. The high signal peak-to-average-power-ratio (PAPR) that accompanies the OFDM signal is however reduced by adopting the pilot symbol phase rotation technique previously proposed by the authors. With this, over 4 dB reduction in the electrical PAPR is attainable. This combined approach thus make it possible to achieve high throughput without incurring the high PAPR penalties.

Original language	English
Title of host publication	Proceedings of the IEEE International Conference on Communications, Communication Workshop (ICCW 15)
Publisher	IEEE
Pages	1322-1326
Number of pages	5
DOIs	https://doi.org/10.1109/ICCW.2015.7247361
Publication status	Published - Jun 2015

Keywords

visible light communication
OFDM
electrical PAPR

Documents and Links

10.1109/ICCW.2015.7247361

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Popoola, W., Ghassemlooy, Z., & Stewart, B. (2015). Optimising OFDM based visible light communication for high throughput and reduced PAPR. In Proceedings of the IEEE International Conference on Communications, Communication Workshop (ICCW 15) (pp. 1322-1326). IEEE. https://doi.org/10.1109/ICCW.2015.7247361

@inproceedings{7902c0d9607844ffb3ea3a087be52cfa,

title = "Optimising OFDM based visible light communication for high throughput and reduced PAPR",

abstract = "In order to circumvent the throughput limitation imposed on visible light communication (VLC) systems by the limited LED bandwidth, optical orthogonal frequency division multiplexing (OFDM) with non-uniform bit-loading is studied in this paper. By using lower order modulation on subcarriers that suffer the most distortion, we show that it is possible to establish a high throughput and reliable OFDM based VLC link at a sampling rate of six times the available system bandwidth. The high signal peak-to-average-power-ratio (PAPR) that accompanies the OFDM signal is however reduced by adopting the pilot symbol phase rotation technique previously proposed by the authors. With this, over 4 dB reduction in the electrical PAPR is attainable. This combined approach thus make it possible to achieve high throughput without incurring the high PAPR penalties.",

keywords = "visible light communication, OFDM, electrical PAPR",

author = "Waisu Popoola and Zabih Ghassemlooy and Brian Stewart",

year = "2015",

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doi = "10.1109/ICCW.2015.7247361",

language = "English",

pages = "1322--1326",

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AU - Popoola, Waisu

AU - Ghassemlooy, Zabih

AU - Stewart, Brian

PY - 2015/6

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N2 - In order to circumvent the throughput limitation imposed on visible light communication (VLC) systems by the limited LED bandwidth, optical orthogonal frequency division multiplexing (OFDM) with non-uniform bit-loading is studied in this paper. By using lower order modulation on subcarriers that suffer the most distortion, we show that it is possible to establish a high throughput and reliable OFDM based VLC link at a sampling rate of six times the available system bandwidth. The high signal peak-to-average-power-ratio (PAPR) that accompanies the OFDM signal is however reduced by adopting the pilot symbol phase rotation technique previously proposed by the authors. With this, over 4 dB reduction in the electrical PAPR is attainable. This combined approach thus make it possible to achieve high throughput without incurring the high PAPR penalties.

AB - In order to circumvent the throughput limitation imposed on visible light communication (VLC) systems by the limited LED bandwidth, optical orthogonal frequency division multiplexing (OFDM) with non-uniform bit-loading is studied in this paper. By using lower order modulation on subcarriers that suffer the most distortion, we show that it is possible to establish a high throughput and reliable OFDM based VLC link at a sampling rate of six times the available system bandwidth. The high signal peak-to-average-power-ratio (PAPR) that accompanies the OFDM signal is however reduced by adopting the pilot symbol phase rotation technique previously proposed by the authors. With this, over 4 dB reduction in the electrical PAPR is attainable. This combined approach thus make it possible to achieve high throughput without incurring the high PAPR penalties.

KW - visible light communication

KW - OFDM

KW - electrical PAPR

U2 - 10.1109/ICCW.2015.7247361

DO - 10.1109/ICCW.2015.7247361

M3 - Conference contribution

SP - 1322

EP - 1326

BT - Proceedings of the IEEE International Conference on Communications, Communication Workshop (ICCW 15)

PB - IEEE

ER -