Modeling Vehicle-to-Vehicle Visible Light Communication Link Duration with Empirical Data

• Main Authors: Li-Che Wu, 吳酈哲
• Other Authors: Hsin-Mu Tsai
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/95177532204107154198

碩士 === 國立臺灣大學 === 資訊工程學研究所 === 101 === Visible Light Communication (VLC) is a fast-growing technology that provides free-space wireless communications using LEDs and photodiodes. As LED becomes common in automotive lighting, Vehicular VLC (V2LC) becomes a new and low-cost solution to implement vehicle-to-vehicle (V2V) communications, in order to support many new safety and infotainment applications. In this thesis, we take an experimental approach to measure the distribution of V2LC link duration. A video recorder was mounted on a taxi car while it was driven around the city, and the recorded video was post-processed to identify the taillights of other vehicles. Then, the duration of a taillight that stays in the video can be used as an approximation of the link duration of a V2LC link, if some vehicles were equipped with VLC-capable taillights. Our measurement results suggest that on average the V2LC link duration is on the order of several seconds, while the numbers could significantly vary in different scenarios. It was also found that exponential distribution can be used to model the V2LC link duration. Finally, the empirical distributions of link duration reported in this thesis will be useful for future system design and performance evaluation.