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

Wasiu Oyewole Popoola; Zabih Ghassemlooy; Brian Stewart

doi:10.1109/ICCW.2015.7247361

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

Wasiu Oyewole Popoola, Zabih Ghassemlooy, Brian Stewart

Mathematics, Physics and Electrical Engineering

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

18 Citations (Scopus)

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
DOIs	https://doi.org/10.1109/ICCW.2015.7247361
Publication status	Published - 6 Aug 2015
Event	2015 IEEE International Conference on Communication Workshop (ICCW) - London Duration: 6 Aug 2015 → …

Conference

Conference	2015 IEEE International Conference on Communication Workshop (ICCW)
Period	6/08/15 → …

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10.1109/ICCW.2015.7247361

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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.",

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AU - Popoola, Wasiu Oyewole

AU - Ghassemlooy, Zabih

AU - Stewart, Brian

PY - 2015/8/6

Y1 - 2015/8/6

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.

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DO - 10.1109/ICCW.2015.7247361

M3 - Paper

T2 - 2015 IEEE International Conference on Communication Workshop (ICCW)

Y2 - 6 August 2015

ER -

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

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