基于事件视觉传感器的三元可见光通信
Ternary Visible Light Communication Using Event-Based Vision Sensors
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中文总结 AI 辅助
本文提出一种利用事件视觉传感器和液晶显示器的三元可见光通信方法，将亮度转变映射为三元符号，并采用帧转换检测解调算法，实现336.5 kbps吞吐量，较二进制方法提升约150%。
中文摘要 AI 辅助
本文提出了一种使用事件视觉传感器（EVS）和液晶显示器（LCD）的三元可见光通信方法。光学相机通信（OCC）的吞吐量受限于传统基于帧的相机的帧率，而EVS有望克服这一限制，因为其像素会响应亮度变化异步触发带有极性的事件，时间分辨率达到微秒量级。然而，现有的基于事件的OCC依赖于仅使用事件有无的二进制信令，而忽略了极性。所提出的方法将三种亮度转变（增加、减少和无变化）映射为三元符号，从而增加了每个符号携带的信息量。在发射端，LCD显示一个标记，其中编码了传输数据；在接收端，EVS捕获该标记并将亮度变化记录为具有正极性和负极性的事件。为了抑制发射端显示更新与接收端解调之间的时间失配引起的错误，我们还提出了一种基于帧转换检测的解调算法。实验结果表明，所提出的方法实现了336.5 kbps的吞吐量，比其二进制对应方法高出约150%。
英文摘要
This paper proposes a ternary visible light communication method using an event-based vision sensor (EVS) and a liquid crystal display (LCD). The throughput of optical camera communication (OCC) is limited by the frame rates of conventional frame-based cameras, and EVSs are expected to overcome this limitation because their pixels asynchronously trigger events with polarity in response to brightness changes, with a temporal resolution on the order of microseconds. However, existing event-based OCC relies on binary signaling that uses only the presence or absence of events and leaves the polarity unused. The proposed method maps the three brightness transitions (increase, decrease, and no change) to ternary symbols, thereby increasing the information carried per symbol. At the transmitter, the LCD displays a marker in which the transmitted data are encoded; at the receiver, the EVS captures the marker and records the brightness changes as events with positive and negative polarities. To suppress errors caused by the timing mismatch between display updates at the transmitter and demodulation at the receiver, we also propose a demodulation algorithm based on frame-transition detection. Experimental results demonstrate that the proposed method achieves a throughput of 336.5 kbps, approximately 150% higher than that of its binary counterpart.
发表机构
- The University of Osaka（大阪大学）
- Kansai University（关西大学）
机构由 AI 辅助整理，请以论文原文为准。
