A Novel Single-Anchor-based Visible Light Positioning Approach

With the growing demand for indoor positioning, various technologies are being explored, and visible light positioning (VLP) has become a popular choice due to its cost-effectiveness and efficient deployability. However, the current commonly used VLP methods are always based on the multi anchors, which means high wiring and controller costs. Thus, a self-designed single anchor which integrated several Light Emitting Diodes (LEDs) is first proposed in this work. The highly integrated hardware requires less cost, and the smaller receiver means more applications can be adapted. Further, to reduce the workload of fingerprint information collection, the calibrated propagation model is used to generate new fingerprint information, which significantly increases the efficiency of the fingerprint database's construction and maximizes the use of stable visible light signals with little interference. The feasibility of the proposed hardware and methods is evaluated through a room-scale implementation, which shows that localization accuracy improves by 75.56% and 55.27% when using densified fingerprint points. Additionally, the study carefully evaluates the performance of different neighbor points' quantities and different kinds of distances, and Weighted K-Nearest Neighbor is tested, which yields superior results compared to the commonly used K-Nearest Neighbor.