In this paper we experimentally demonstrate, for the first time, staggered
carrier-less amplitude and phase (sCAP) modulation for visible light
communication systems based on polymer light-emitting diodes emitting at ~639
nm. The key advantage offered by sCAP in comparison to conventional multiband
CAP is its full use of the available spectrum. In this work, we compare sCAP,
which utilises four orthogonal filters to generate the signal, with a
conventional 4-band multi-CAP system and on-off keying (OOK). We transmit each
modulation format with equal energy and present a record un-coded transmission
speed of ~6 Mb/s. This represents gains of 25% and 65% over the achievable rate
using 4-CAP and OOK, respectively.Comment: 6 pages, 9 figures, IEEE ICC 2019 conferenc