利用CMOS影像感測接收器及廣告看板之可見光通訊研究

近幾年，由於無線通訊技術可利用的頻譜資源已趨近飽和，使可見光通訊系統(Visible Light Communication, VLC)更加受到重視，除了本身具備照明效果外，搭配上其尚未被廣泛應用的頻譜資源，若藉此將其作為傳輸數據的媒介，可以說是如虎添翼。本論文首要探討互補式氧化物半導體(Complementary Metal-oxide Semiconductor, CMOS)影像感測器與其滾動式快門效應(Rolling Shutter Effect, RSE)，藉由此機制載入調變訊號，透過光源傳送，依此為主軸進行延伸，並以廣告看板為傳送光源，利用智慧型手機進行接收，探討傳送端從發光二極體(Light-emitting Diode, LED)變成廣告看板後帶來的差異，並依此進行改善，期盼藉此改善其原有之傳輸距離過短之問題，增加其實用性。

關鍵字

廣告看板；可見光通訊；滾動式快門效應； CMOS影像感測器

並列摘要

As the traditional radio-frequency communication spectrum is nearly fully occupied in recent years, visible light communication (VLC) has attracted attention since it could be a promising solution for the future wireless communications. VLC can provide wireless communication and lighting at the same time. It is license-free and electromagnetic interference (EMI) free; hence it can be applied in environments where radio-frequency (RF) communication is restricted. 　　In this thesis, we explored the theory of complementary metal-oxide semiconductor (CMOS) image sensors and rolling shutter effect (RSE). Then, we apply the CMOS image sensor as VLC receiver to capture VLC signals generated by the light-emitting diode (LED) based advertisement panel. Different schemes were proposed to improve the performance of the CMOS image sensor based VLC systems.