We propose and experimentally demonstrate a color-shift-keying embedded direct-current-optical-orthogonal-frequency-division-multiplexing (CSK-DCO-OFDM) scheme for the VLC systems. The proposed scheme can provide not only non-flickering aggregated optical power to reduce human health concerns, but also offers additional modulation dimension or flexibility to the CSK by including high data rate OFDM signal. The data rate is increased from 10 Mbit/s in the original CSK signal to 70.43 Mbit/s in the CSK-DCO-OFDM signal, and both the CSK and OFDM signals satisfy the forward-error-correction (FEC) threshold.

中文翻译：

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用于可见光通信 (VLC) 的色移键控嵌入式直流光正交频分复用 (CSK-DCO-OFDM)

我们提出并通过实验证明了一种用于 VLC 系统的色移键控嵌入式直流光正交频分复用 (CSK-DCO-OFDM) 方案。所提出的方案不仅可以提供非闪烁聚合光功率以减少人类健康问题，而且还可以通过包含高数据速率 OFDM 信号为 CSK 提供额外的调制维度或灵活性。数据速率从原始CSK信号的10 Mbit/s提高到CSK-DCO-OFDM信号的70.43 Mbit/s，CSK和OFDM信号均满足前向纠错（FEC）门限。