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Optical Engineering • new

Forward and correctional OFDM-based visible light positioning
Author(s): Wei Li; Zhitong Huang; Runmei Zhao; Peixuan He; Yuefeng Ji
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Paper Abstract

Visible light positioning (VLP) has attracted much attention in both academic and industrial areas due to the extensive deployment of light-emitting diodes (LEDs) as next-generation green lighting. Generally, the coverage of a single LED lamp is limited, so LED arrays are always utilized to achieve uniform illumination within the large-scale indoor environment. However, in such dense LED deployment scenario, the superposition of the light signals becomes an important challenge for accurate VLP. To solve this problem, we propose a forward and correctional orthogonal frequency division multiplexing (OFDM)-based VLP (FCO-VLP) scheme with low complexity in generating and processing of signals. In the first forward procedure of FCO-VLP, an initial position is obtained by the trilateration method based on OFDM-subcarriers. The positioning accuracy will be further improved in the second correctional procedure based on the database of reference points. As demonstrated in our experiments, our approach yields an improved average positioning error of 4.65 cm and an enhanced positioning accuracy by 24.2% compared with trilateration method.

Paper Details

Date Published: 1 September 2017
PDF: 4 pages
Opt. Eng. 56(9) 090501 doi: 10.1117/1.OE.56.9.090501
Published in: Optical Engineering Volume 56, Issue 9
Show Author Affiliations
Wei Li, Beijing Univ. of Posts and Telecommunications (China)
Zhitong Huang, Beijing Univ. of Posts and Telecommunications (China)
Beijing Univ. of Technology (China)
Runmei Zhao, Beijing Univ. of Posts and Telecommunications (China)
Peixuan He, Beijing Univ. of Posts and Telecommunications (China)
Yuefeng Ji, Beijing Univ. of Posts and Telecommunications (China)
Beijing Univ. of Technology (China)


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