Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6925843 | ICT Express | 2018 | 4 Pages |
Abstract
K-nearest neighbour is one of the most widely used algorithms for indoor positioning systems. However, the error for each estimated position notably varies depending on the K value used for the algorithm. Therefore, if K is a fixed value, the estimation error for the positions cannot be further reduced. In this Letter, I propose an algorithm that adapts the K value for each position by analysing the correlation between the K value and the received WiFi signal strength. The proposed algorithm provides an improvement above 30% on the positioning accuracy compared to the algorithm with fixed K value.
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Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Jongtaek Oh, Jisu Kim,