光学成像通信研究现状与展望

Research Status and Prospects on Optical Camera Communication

可见光通信(VLC)具有调制带宽高、安全性好、保密性优良等优点,成为了一种有发展前景的无线通信技术。随着智能设备的发展与推广,图像传感器得到了大量的普及,将图像传感器应用于接收端的VLC技术被称为光学成像通信(OCC)。OCC与VLC在相同的信道频段中工作,具有VLC优势的同时,在接收器方面有更多的优势。本文综述了OCC的原理,对其中涉及到的图像传感、同步等技术进行了简单介绍,主要对OCC中使用的调制方式进行了分析,并将其分为键控调制和颜色调制来讨论,最后对OCC存在的问题和发展前景进行了总结,希望能对OCC的研究提供一定的参考。

Visible light communication(VLC)has many advantages such as high modulation bandwidth,good security and excellent confidentiality.It has become a promising wireless communication technology.With the development and promotion of smart devices,image sensors have been expanded.The VLC technology that applies image sensors to the receiving end is called optical camera communication(OCC).OCC has the same working channel frequency band with VLC,and not only does OCC have the advantages of VLC,but also has more other advantages in the receiver.This paper reviews the principle of OCC,introduces the techniques of image sensing and synchronization,and mainly analyzes the modulation methods used in OCC.The modulation methods are divided into keying modulation and color modulation for analysis.By summarizing the problems and future development prospects of OCC,we hope to provide some reference for the future research of this communication wethod.