In this Letter, we develop a novel technique, to the best of our knowledge, to increase the link span ($ {L_s} $Ls) of a rolling shutter (RS)-based optical camera communications (OCC) system by reducing the spatial bandwidth of the camera in the out-of-focus regions. We demonstrate a 400 m line-of-sight RS-based OCC link, which is to date the longest $ {L_s} $Ls reported in these systems, and develop a detection method to extract the information out of the video frames, successfully. The proposed system relaxes the condition of a large surface area for the transmitter light source. Consequently, we show that at 400 m $ {L_s} $Ls and exposure times of 100-80 µs, a data rate of 450 bps is achieved successfully.

中文翻译：

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基于滚动快门的400 m光学相机通信链路。

在本信函中，我们尽我们所知开发了一种新颖的技术，可通过减少空间来增加基于卷帘（RS）的光学相机通信（OCC）系统的链接范围（$ {L_s} $ Ls）对焦区域中相机的带宽。我们演示了一条基于RS的400 m视距OCC链接，该链接是迄今为止在这些系统中报告的最长$ {L_s} $ Ls，并开发了一种成功地从视频帧中提取信息的检测方法。所提出的系统放宽了发射器光源大表面积的条件。因此，我们表明在400 m $ {L_s} $ Ls和100-80 µs的曝光时间下，成功实现了450 bps的数据速率。