Elimination of Effect of Heterogeneous Background in Smartphone Visible Light Communications

• Main Authors: JHAN, FU-CHENG, 詹富丞
• Other Authors: LAIN, JENN-KAIE
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/9m3rw5

碩士 === 國立雲林科技大學 === 電子工程系 === 106 === Abstract Much research has been devoted to investigate visible light signal detection using CMOS sensor embedded in smartphone under the scenario of pure white background. However, the characteristics of the reflection surface are not always homogeneous in a practical environment. In this thesis, we proposed a background-subtraction-like image processing for visible light signal detection under a heterogeneous background. Experimental results demonstrated that the proposed method achieved bit error rate 2.638×〖10〗^(-3) and packet error rate 4.538×〖10〗^(-2) performance under the heterogeneous background. Keywords：Visible light communications, Non Line-of-Sight, Android Mobile, LabVIEW, OOK, Rolling Shutter, Light to camera