可見光通訊品質提升以及應用

Abstract

現今數位化時代，網路的使用已經成為生活中不可缺少的一部分，人們對通訊的需求越來越大，而現今可用頻寬已經非常的擁擠，可見光通訊(VLC)的出現可望緩解壅擠的頻段，成為5G及IoT重要的推手，隨著LED的製程成熟以及價格逐漸下降,室內外照明設備漸漸被LED所取代，且其具有廣的頻寬，使得LED可以被應用在無線通訊的領域，可見光通訊整合LED照明設備來傳輸訊號，提供高速、安全及方便的網路環境。 本文探討以太陽能板以及CMOS 為接收器的可見光的通訊品質，太陽能板能夠接收光的電壓變化，且能同時儲存能量,其特性能夠成為被動光接收器，且其製程簡單能夠廣泛的整合在IOT的應用上。CMOS相機搭配影像處利技術能夠建立以圖像傳輸的可見光通訊系統，在未來智能交通系統裡利用行車紀錄器內建的相機能夠建立起車輛之間的通訊，提高自動駕駛的安全性。

In this digital age, Internet has become an indispensable part of life. The demanding of communication is growing, but the available bandwidth is already very crowded. Visible light communication (VLC) is expected to ease the increasingly crowded frequency band, and the promoter of 5G and IOT. With the LED process is matured and the price gradually decreased, lighting lamp is gradually replaced by LED. With its wide bandwidth, LEDs can be applied in wireless communications. Integration of VLC and LED illumination device can provide fast, secure and convenient network environment. This thesis explores the communication quality of VLC and its application with different receivers, Solar panel and CMOS sensor. Solar panels can receive light voltage and store energy simultaneously. These characteristics can make it be passive receivers and be integrated with the application of IoT. The using of CMOS camera and the image processing can built an image based VLC. In the future application of intelligent transport system (ITS), we cans use driving recorder built-in camera to establish a communication between vehicles, to improve the automatic driving safety