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Proceedings Paper • Open Access

LiFi: transforming fibre into wireless
Author(s): Liang Yin; Mohamed Sufyan Islim; Harald Haas

Paper Abstract

Light-fidelity (LiFi) uses energy-efficient light-emitting diodes (LEDs) for high-speed wireless communication, and it has a great potential to be integrated with fibre communication for future gigabit networks. However, by making fibre communication wireless, multiuser interference arises. Traditional methods use orthogonal multiple access (OMA) for interference avoidance. In this paper, multiuser interference is exploited with the use of non-orthogonal multiple access (NOMA) relying on successive interference cancellation (SIC). The residual interference due to imperfect SIC in practical scenarios is characterized with a proportional model. Results show that NOMA offers 5 -10 dB gain on the equivalent signal-to-interference-plus-noise ratio (SINR) over OMA. The bit error rate (BER) performance of direct current optical orthogonal frequency division multiplexing (DCO-OFDM) is shown to be significantly improved when SIC is used.

Paper Details

Date Published: 28 January 2017
PDF: 9 pages
Proc. SPIE 10128, Broadband Access Communication Technologies XI, 1012802 (28 January 2017); doi: 10.1117/12.2262047
Show Author Affiliations
Liang Yin, The Univ. of Edinburgh (United Kingdom)
Mohamed Sufyan Islim, The Univ. of Edinburgh (United Kingdom)
Harald Haas, The Univ. of Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 10128:
Broadband Access Communication Technologies XI
Benjamin B. Dingel; Katsutoshi Tsukamoto; Spiros Mikroulis, Editor(s)

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