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Cluster-Based RF Fingerprint Positioning Using LTE and WLAN Signal Strengths

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Abstract

Wireless Local Area Network (WLAN) positioning has become a popular localization system due to its low-cost installation and widespread availability of WLAN access points. Traditional grid-based radio frequency (RF) fingerprinting (GRFF) suffers from two drawbacks. First it requires costly and non-efficient data collection and updating procedure; secondly the method goes through time-consuming data pre-processing before it outputs user position. This paper proposes Cluster-based RF Fingerprinting (CRFF) to overcome these limitations by using modified Minimization of Drive Tests data which can be autonomously collected by cellular operators from their subscribers. The effect of environmental changes and device variation on positioning accuracy has been carried out. Experimental results show that even under these variations CRFF can improve positioning accuracy by 15.46 and 22.30% in 95 percentile of positioning error as compared to that of GRFF and K-nearest neighbour methods respectively.

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Acknowledgements

The authors would like to thank colleagues from University of Jyvaskyla and European Communications Engineering, Finland for their constructive criticism, comments and support.

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Correspondence to Riaz Uddin Mondal.

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Mondal, R.U., Ristaniemi, T. & Turkka, J. Cluster-Based RF Fingerprint Positioning Using LTE and WLAN Signal Strengths. Int J Wireless Inf Networks 24, 413–423 (2017). https://doi.org/10.1007/s10776-017-0369-9

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  • DOI: https://doi.org/10.1007/s10776-017-0369-9

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