RainbowRow: Fast Optical Camera Communication
RainbowRow: Fast Optical Camera Communication
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RainbowRow：快速光学相机通信
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Li Xiao
中科院分区：
文献类型：
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作者：
Xiao Zhang;Li Xiao
随着智能手机的普及，光学相机通信（OCC）作为未来一种新型的互联网络架构越来越受到市场和研究人员的关注。然而，现有的OCC调制将来自发射器的信号视为单点光源，这牺牲了空间分集并限制了数据速率的提高。本文研究了相机成像的自然特征空间分集，提出将空间分集与幅度分集和频谱分集相结合，提高OCC的数据速率，以支持高速应用。在初步实验的基础上，设计并实现了高速鲁棒OCC系统RainbowRow。RainbowRow包括一个基于led的发射器和一个基于摄像头的接收器，其成本低（即100美元以下），具有灵活的通信范围（即在2米内）和高速（即高达40 Kbps）。为了验证RainbowRow的性能，我们在基于LabVIEW的平台上进行了不同场景的实验。结果表明，rainbow - row能够鲁棒地识别符号误差率小于0.05的光学符号，在1 m范围内的数据速率接近40 Kbps，较OCC技术的不足10 Kbps有了显著提高。
Thanks to the popularity of smartphones, optical camera communication (OCC) gains more and more attention from markets and research as one of the new internetworking architectures in the future. However, existing OCC modulations treat the signal from the transmitter as a single point light source, which sacrifices the spatial diversity and limits the data rate improvement. In this paper, we investigate the spatial diversity, a natural feature of camera imaging, and propose to combine spatial diversity with amplitude and spectrum diversities to boost the data rate of OCC to support high-speed applications. Based on preliminary experiments, we design and implement RainbowRow, a high-speed and robust OCC system. RainbowRow comprises a LED-based transmitter and a camera-based receiver, which is low-cost (i.e., under $100), with a flexible communication range (i.e., within 2 m), and high speed (i.e., up to 40 Kbps). To validate the RainbowRow performance, we conduct experiments on LabVIEW based platforms in different scenarios. Results show that RainbowRow can robustly recognize the optical symbols with a symbol error rate (SER) less than 0.05 and approach 40 Kbps data rate in the range of 1 m, significant improvement from less than 10 Kbps in OCC state of the art.