Design of efficient and compact visible light communication using low-speed image sensor and MEMS mirror
Design of efficient and compact visible light communication using low-speed image sensor and MEMS mirror
复制标题
使用低速图像传感器和MEMS镜设计高效紧凑的可见光通信
DOI：
10.1109/gcce.2017.8229354
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
N. Wakatsuki
中科院分区：
文献类型：
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作者：
Ryunosuke Kurimoto;Yoshihito Imai;T. Ebihara;K. Mizutani;N. Wakatsuki
可见光通信（VLC）利用可见光进行数据传输和照明，适用于车辆对车辆/基础设施对车辆的通信。然而，现有的 VLC 系统需要高速相机才能实现高数据速率。为了使用商业设备（例如智能手机）实现具有足够数据速率的 VLC，提出了使用低速图像传感器和 MEMS 镜的 VLC。在所提出的技术中，发射器使用 LED 发射调制光脉冲，接收器使用 MEMS 镜子和图像传感器获取消息。具体来说，快速闪烁的入射光（时域信号）被MEMS镜扫描并转换为点划线（空间域信号），图像传感器可以高效地捕获每帧多个位。通过实验评估了系统的性能。所得结果表明，当信噪比超过 5 dB 时，所提出的使用低速图像传感器和 MEMS 镜的 VLC 系统可以实现 25 bps 的数据速率（图像传感器的帧速率：5 fps），误码率为 0。
Visible light communication (VLC) offers the usage of visible light for data transmission as well as illumination, and is suitable for vehicle-to-vehicle/infrastructure-to-vehicle communication. However, existing VLC systems require high-speed camera to achieve high data rate. To achieve VLC with sufficient data rate using commercial devices (e.g., smartphones), VLC using low-speed image sensor and MEMS mirror is proposed. In proposed technique, the transmitter emits modulated light pulses using an LED, and the receiver obtains the message using MEMS mirror and image sensor. Specifically, incoming light of fast blinking (time-domain signal) is scanned and converted to dotted and dashed lines (space-domain signal) by MEMS mirror, and image sensor can capture multiple bits per frame efficiently. The performance of the system was evaluated in experiments. The obtained results suggest that the proposed VLC system using low-speed image sensor and MEMS mirror could achieve data rate of 25 bps (frame rate of image sensor: 5 fps) with bit-error rate of 0 when signal-to-noise ratio was more than 5 dB.