Indoor visible light positioning system based differential phase shift method for various applications

• Main Author: Lim, Wei Ping
• Other Authors: Arokiaswami Alphones
• Format: Final Year Project
• Language: English
• Published: 2018
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Wireless communication systems
• Online Access: http://hdl.handle.net/10356/76362
• Institution: Nanyang Technological University

Researches on the visible light indoor positioning are mainly driven by two reasons, one is the gap of indoor positioning, another is the rising of Light Fidelity (Li-Fi) techniques. For outdoor positioning, Global Positioning System (GPS) are widely implemented on vehicles and mobiles. The performance of the GPS is in meter level on outdoor applications. While in indoor scenarios, GPS signals suffer severe attenuation and the accuracy drops to tens of meters. However, in the foreseeable future robots will become a indispensable part of human life (robots for housekeeping, health care and safety applications), which all demand the location awareness function in centimetre level under the indoor environment. Therefore, a highly accurate indoor positioning system will become a necessity in the future. Moreover, the Li-Fi systems are currently being developed for commercial usage. Companies have started the first generation of commercialized Li-Fi system Li-Fi technology has great potential to release the burden of Wi-Fi and also utilizes the same lighting infrastructure for communication at low cost. Naturally, an indoor positioning system that is integrated with the Li-Fi system and offers the highly accurate positioning function at low costs will be desirable