Multi-LED parallel transmission for long distance underwater VLC system with one SPAD receiver

• DOI: 10.1016/j.optcom.2017.11.069
• Publication Date: 2017-12-14T15:08:28Z
• Authors: Chao Wang; Hong-Yi Yu; Yi-Jun Zhu; Tao Wang; Ya-Wei Ji
• Keywords: Photon Counting

Abstract In this paper, a multiple light emitting diode (LED) chips parallel transmission (Multi-LED-PT) scheme for underwater visible light communication system with one photon-counting single photon avalanche diode (SPAD) receiver is proposed. As the lamp always consists of multi-LED chips, the data rate could be improved when we drive these multi-LED chips parallel by using the interleaver-division-multiplexing technique. For each chip, the on–off-keying modulation is used to reduce the influence of clipping. Then a serial successive interference cancellation detection algorithm based on ideal Poisson photon-counting channel by the SPAD is proposed. Finally, compared to the SPAD-based direct current-biased optical orthogonal frequency division multiplexing system, the proposed Multi-LED-PT system could improve the error-rate performance and anti-nonlinearity performance significantly under the effects of absorption, scattering and weak turbulence-induced channel fading together.