An Enhanced Color Shift Keying Modulation Scheme for High-Speed Wireless Visible Light Communications

摘要: This paper presents a new color shift keying (CSK) modulation format for wireless visible light communication (VLC), based on four colors instead of the three used in existing IEEE 802.15.7 CSK physical layer standard. The system uses novel intensity and direct detection approach to realize four-dimensional signaling scheme that available signal spaces efficiently. bit error rate evaluation both proposed shows achieves significant 4.4-dB electrical SNR gain over an additive white Gaussian noise channel. performance systems is examined range dispersive optical channels including channel crosstalk insertion losses, which reveals more power efficient reliable than particular amount delay spread may have.