A direct current (DC) bias is required in DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) to enable visible light communication (VLC). However, the addition of the DC-bias leads to electrical and optical power inefficiency. An experimental demonstration of an energy efficient superposition modulation technique is presented based on augmented spectral efficiency discrete multitone (ASE-DMT) transmission. Significant energy savings of up to 14.27 dB are achieved in comparison with DCO-OFDM at low DC bias. The results highlight the potential of ASE-DMT in spectrum and energy efficient light fidelity (LiFi) systems.
|Title of host publication||2019 IEEE International Conference on Communications Workshops (ICC Workshops)|
|ISBN (Electronic)||978-1-7281-2373-8, 978-1-7281-2372-1|
|Publication status||Published - 11 Jul 2019|
|Event||2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019 - Shanghai, China|
Duration: 20 May 2019 → 24 May 2019
|Conference||2019 IEEE International Conference on Communications Workshops, ICC Workshops 2019|
|Period||20/05/19 → 24/05/19|