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Joint equalization and synchronization for carrierless amplitude and phase modulation in visible light communication

Akande, KO; Haigh, PA; Popoola, WO; (2017) Joint equalization and synchronization for carrierless amplitude and phase modulation in visible light communication. In: Cardona, Narcis and Dobre, Octavia A. and Guizani, Mohsen, (eds.) Proceedings of the 13th International Wireless Communications and Mobile Computing Conference (IWCMC), 2017. (pp. pp. 876-881). IEEE: Valencia, Spain. Green open access

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Abstract

In this paper, a linear adaptive least mean square (LMS) fractionally spaced equalizer (FSE) is proposed to jointly mitigate the severe inter-symbol interference (ISI) and timing jitter encountered by carrierless amplitude and phase modulation (CAP) in visible light communication (VLC) systems. The performance of FSE is compared to that of its counterpart, the symbol spaced equalizer (SSE), at the forward error control (FEC) bit error rate (BER) limit. It is shown that at a signal-to-noise ratio (SNR) of 20 dB and FEC BER limit of 3 × 10 -3 , FSE is able to achieve a bit rate of 95 Mb/s (spectral efficiency η of 14.6 bits/s/Hz) while only 30 Mb/s (η of 4.6 bits/s/Hz) is possible with SSE using CAP-64. It is observed that the FSE performance is insensitive to timing jitter while SSE performance suffers severe degradation. The results therefore indicate that FSE is better suited for CAP-based VLC systems than the widely used SSE.

Type: Proceedings paper
Title: Joint equalization and synchronization for carrierless amplitude and phase modulation in visible light communication
Event: 13th International Wireless Communications and Mobile Computing Conference (IWCMC), 2017
ISBN-13: 9781509043729
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IWCMC.2017.7986401
Publisher version: https://doi.org/10.1109/IWCMC.2017.7986401
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.
Keywords: Carrierless amplitude and phase modulation (CAP), visible light communication (VLC), fractionally spaced equalization (FSE), timing jitter, optical communication
UCL classification: UCL > Provost and Vice Provost Offices
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/1573085
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