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Undersampled pulse width modulation for optical camera communications

Lookup NU author(s): Dr Paul Haigh

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This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by IEEE, 2018.

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Abstract

© 2018 IEEE. An undersampled pulse width modulation (UPWM) scheme is proposed to enable users to establish a non- flickering optical camera communications (OCC) link. With UPWM, only a digital light emitting diode (LED) driver is needed to send signals using a higher order modulation. Similar to other undersample-based modulation schemes for OCC, a dedicated preamble is required to assist the receiver to indicate the phase error introduced during the undersampling process, and to compensate for nonlinear distortion caused by the in-built gamma correction function of the camera. To test the performance of the UPWM- based OCC system, an experimental test-bed is developed. The experimental results show that the proposed system is able to achieve a data rate of 150 bps (spectrum efficiency of 5 bits/symbol) at a bit error rate of 6.76×10^-4, which is well below the forward error correction limit of 3.8×10^-3, over a link span of 1 m using a Huawei Nexus 6P smartphone with a frame rate of 30 fps.


Publication metadata

Author(s): Luo P, Jiang T, Haigh PA, Ghassemlooy Z, Zvanovec S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2018 IEEE International Conference on Communications Workshops (ICC Workshops 2018)

Year of Conference: 2018

Pages: 1-6

Online publication date: 05/07/2018

Acceptance date: 02/04/2018

Date deposited: 13/03/2019

Publisher: IEEE

URL: https://doi.org/10.1109/ICCW.2018.8403732

DOI: 10.1109/ICCW.2018.8403732

Library holdings: Search Newcastle University Library for this item

ISBN: 9781538643280


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