Work

Real-time APD-based visible light positioning system with quality-aware RSS selection and embedded tracking

Year: 2026

Type: article

Abstract: This paper presents a robust received signal strength (RSS)-based visible light positioning system for embedded real-time indoor tracking. To address the sensitivity of conventional RSS-based methods to low-signal-to-noise measurements and the high computational complexity of real-time implementations, a hardware-software co-designed architecture is developed on a Xilinx Zynq-7000 system-on-chip (SoC) platform. At the hardware level, the programmable logic (PL) implements adaptive signal conditioning, frame synchronization, light-emitting diode (LED) identification, and state-based protocol detection to ensure reliable RSS acquisition under noisy conditions. On the software side, the processing system (PS) performs cascaded filtering and adaptive anchor selection to suppress unreliable measurements and mitigate bias caused by low-quality LEDs. A hierarchical search strategy further exploits inter-frame continuity to reduce computational complexity for real-time tracking. Experimental results under line-of-sight (LOS)-dominant indoor conditions demonstrate an average static positioning error of 4.98 cm and a position update rate of 15 Hz, with stable tracking across the tested motion speeds.

Source: Optics Express

DOI: 10.1364/oe.612032

Authors: Shanxiang Zhao, Weijie Liu, Nuo Huang, Chen Gong, Zhengyuan Xu

Institution: University of Science and Technology of China

Language: English

Topic: Optical Wireless Communication Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China