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High-speed visible light communications using polarisation multiplexing (Advert Reference: SF19/EE/MPEE/GHASSEMLOOY)


Project Description

The fifth generation wireless network aims to deliver high-quality services using different technologies, which includes millimetre wave and visible light communications (or LiFi). The latter is license-free offering high data rates, high-energy efficiency, high security (highly desirable in many applications including finance, medicine, modern manufacturing, etc.) and robustness against interference. The VLC wireless technology uses the light emitting diodes based lighting fixtures (mostly in indoor environments) to provide multiple functionalities of illuminations, data communications, indoor positioning (i.e., GPS) and sensing. The challenge in VLC is to extend the transmission data over a typical transmission range of a few metres. Therefore, this research will investigate VLC for data communications by investigating multiplexing in the polarization domain together with adopting a multi-level-multi-carrier modulation scheme to extend the transmission data rate beyond 20 Gbps, which would be a global record. The work involves isolating the S and P polarisation modes, which enables us to send two data streams in parallel with a small optical power penalty. In addition, the research work will include developing a comprehensive mathematical model of the proposed system considering both dynamic and semi-static conditions as well as the transmitter and receiver characteristics; visible light communications front end design; efficient signalling schemes, and most importantly developing a dedicated start of the art experimental testbeds for verification and evaluation of the proposed scheme. The successful candidate will join OCRG, one of the leading research groups in the world with extensive expertise and research activities in the field of Optical Wireless Communications. The applicant should have a good first degree or MSc in communications engineering, optical communications, electrical/electronic engineering, physics, and digital signal processing.

This project is supervised by Professor Fary Ghassemlooy.

Please note eligibility requirement:
• Academic excellence of the proposed student i.e. 2:1 (or equivalent GPA from non-UK universities [preference for 1st class honours]); or a Masters (preference for Merit or above); or APEL evidence of substantial practitioner achievement.
• Appropriate IELTS score, if required.

For further details of how to apply, entry requirements and the application form, see
https://www.northumbria.ac.uk/research/postgraduate-research-degrees/how-to-apply/

Please note: Applications that do not include a research proposal of approximately 1,000 words (not a copy of the advert), or that do not include the advert reference (e.g. SF19/EE/MPEE/GHASSEMLOOY) will not be considered.

Start Date: 1 March 2020 or 1 October 2020

Northumbria University takes pride in, and values, the quality and diversity of our staff. We welcome applications from all members of the community. The University holds an Athena SWAN Bronze award in recognition of our commitment to improving employment practices for the advancement of gender equality and is a member of the Euraxess network, which delivers information and support to professional researchers.

Funding Notes

This is an unfunded research project.

References

Ghassemlooy, Z., Popoola, W. O., and Rajbhandari, S.: Optical Wireless Communications – System and Channel Modelling with Matlab, 2nd Ed., CRC publisher, USA, August 2019
Ghassemlooy, Z., Alves, L. N., Zvanovec, S., and Khalighi, M-A.: Visible Light Communications: Theory and Applications, CRC June 2017, ISBN 9781498767538 - CAT# K29196
P. Chvojka, P. A. Haigh, A. Minotto, A. Burton, P. Murto, Z. Genene, W. Mammo, M. R. Andersson, E. Wang, Z. Ghassemlooy, F. Cacialli, I. Darwazeh and S. Zvanovec, "Expanded multiband super-Nyquist CAP modulation for highly bandlimited organic visible light communications," in IEEE Systems Journal, pp.1-7, 19 Sep. 2019
B. Lin, X. Tang and Z. Ghassemlooy, "A power domain sparse code multiple access scheme for visible light communications," in IEEE Wireless Communications Letters, 16 Sep. 2019
S. Rajendra Teli, S. Zvanovec, and Z. Ghassemlooy, "Performance evaluation of neural network assisted motion detection schemes implemented within indoor optical camera based communications," Opt. Express 27, 24082-24092 (2019)
P. Chvojka, S. Zvanovec, P. A. Haigh, and Z. Ghassemlooy, "Corrections to “channel characteristics of visible light communications within dynamic indoor environment”," J. Lightwave Technol. 37, 3435-3435 (2019)
Mahmoud W Eltokhey, Korany R Mahmoud, Zabih Ghassemlooy, Salah SA Obayya, “Optimization of intensities and locations of diffuse spots in indoor optical wireless communications,” Optical Switching and Networking, 3, pp. 177-183, 2019.
P. A. Haigh, P. Chvojka, Z. Ghassemlooy, S. Zvanovec, and I. Darwazeh, "Visible light communications: multi-band super-Nyquist CAP modulation," Opt. Express, 27, pp. 8912-8919, 2019.
Z. Feng, C. Guo, Z. Ghassemlooy and Y. Yang, "The Spatial Dimming Scheme for the MU-MIMO-OFDM VLC System," in IEEE Photonics Journal, vol. 10, no. 5, pp. 1-13, Oct. 2018, Art no. 7907013.
. A. Haigh, P. Chvojka, S. Zvánovec, Z. Ghassemlooy and I. Darwazeh, "Analysis of Nyquist Pulse Shapes for Carrierless Amplitude and Phase Modulation in Visible Light Communications," in Journal of Lightwave Technology, vol. 36, no. 20, pp. 5023-5029, 15 Oct.15, 2018.
Brightness-Enhanced Solid-State Light Sources, Sathian, J., Lian, W., Minassian, A., Damzen, M. 24 Jun 2019

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