LED Visible Light Communication System Using Portable Illumination Apparatus for Lifesaving in Disaster Situation

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760307
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Kagawa National College of Technology
• Principal Investigator: ARAI Shintaro 香川高等専門学校, 通信ネットワーク工学科, 助教 (10599195)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 可視光通信 / LED / 災害時通信

Outline of Final Research Achievements

This research subject has considered an image-sensor-based LED visible light communication (VLC) system using a portable illumination apparatus for lifesaving in a disaster situation. The sub-theme 1 has quantitatively analyzed a transmitted LED light affected by an obstacle such as rubble (i.e., communication channel). As results, I concluded that the size of the LED on the image is necessary more than one pixel to prevent the impairment of demodulation performance in the image-sensor-based LED VLC. The sub-theme 2 has proposed a novel demodulation scheme using characteristics of a degraded image, which is affected by the communication channel in the disaster situation. As results of a simulation and an experiment, I have confirmed that the proposed method has a better performance as compared with the conventional demodulation method.

Free Research Field

通信工学