To reduce complexity and achieve lower cost, the on-off keying (OOK) modulation has been widely adopted in implementation of VLC systems. Although the conventional minimum-voltage detection circuit can remove the interference from sunlight or ambient light, the low frequency noise problem is still unsolved. To overcome this drawback, we propose a novel OOK-based VLC receiver architecture consisting of a transimpedance amplifier, a fourth order high pass filter with Sallen-Key method, and a Schmitt trigger. Experiment results show that the proposed receiver not only can remove the interference from ambient lights, but also can reduce the interference effects from the low-frequency noise of ambient light or indoor fluorescent light.

To reduce complexity and achieve lower cost, the on-off keying (OOK) modulation has been widely adopted in implementation of VLC systems. Although the conventional minimum-voltage detection circuit can remove the interference from sunlight or ambient light, the low frequency noise problem is still unsolved. To overcome this drawback, we propose a novel OOK-based VLC receiver architecture consisting of a transimpedance amplifier, a fourth order high pass filter with Sallen-Key method, and a Schmitt trigger. Experiment results show that the proposed receiver not only can remove the interference from ambient lights, but also can reduce the interference effects from the low-frequency noise of ambient light or indoor fluorescent light.

在本作品中，我們提出一種車對車(Vehicle-to-vehicle,V2V)的可見光通訊系統(Visible Light Communication, VLC)，透過車尾燈傳送車電資訊至後方車輛，讓後方車輛能夠即時判斷前方車輛的行車狀況，進而提高行車安全。