Zhehao Liang, Lei Shi, Jie Tang, Jiahao Li, Yuexiang Cao. Improved Weighted K Nearest Neighbor Algorithm for Indoor Visible Light Fingerprint Positioning System[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1706005
- Laser & Optoelectronics Progress
- Vol. 59, Issue 17, 1706005 (2022)
Fig. 1. Model of the indoor VLC system
Fig. 2. Relationship between RSS and actual distance
Fig. 3. Average positioning error of 3 WKNN algorithms at different K
Fig. 4. Cumulative probability distribution of positioning error of 3 WKNN algorithms when K = 3
Fig. 5. Effect of SNR on the average positioning error
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Table 1. Structure of the offline fingerprint database
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Table 2. Parameters of the indoor VLC system
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Table 3. Positioning error statistics of 3 WKNN algorithms
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