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Visible Light Communications: Simplified Co-Equalisation of Fast OFDM in a Multiple-Input Multiple-Output Configuration

Haigh, PA; Burton, A; Ghassemlooy, Z; Darwazeh, I; (2019) Visible Light Communications: Simplified Co-Equalisation of Fast OFDM in a Multiple-Input Multiple-Output Configuration. In: 2019 26th International Conference on Telecommunications (ICT). (pp. pp. 46-50). IEEE: Hanoi, Vietnam. Green open access

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Abstract

In this paper we experimentally demonstrate, for the first time, a simplified co-equalisation for imaging multipleinput multiple-output based visible light communication systems. We show that in such systems, where all channels have similar magnitude responses, an equaliser trained on a single channel produces coefficients that may be used in the form of a look-up table to equalise the remaining channels without the need for explicit or bespoke training. The system demonstrated is based on the fast-orthogonal frequency division multiplexing based on pulse amplitude modulation scheme to improve the spectral efficiency, where a data rate of 80 Mb/s is achieved using four light-emitting diodes, each of a 4 MHz raw bandwidth. We show that the reported system performance closely matches that of the traditional and more computationally complex system in terms of bit-error rate.

Type: Proceedings paper
Title: Visible Light Communications: Simplified Co-Equalisation of Fast OFDM in a Multiple-Input Multiple-Output Configuration
Event: 2019 26th International Conference on Telecommunications (ICT)
ISBN-13: 9781728102733
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICT.2019.8798821
Publisher version: https://doi.org/10.1109/ICT.2019.8798821
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10081771
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