Hyperbolic Location Fingerprinting: A Calibration-Free Solution for Handling Differences in Signal Strength (concise contribution)
By Mikkel Baun Kjærgaard, Carsten Valdemar Munk. 2008
188 citations recorded by the source corpus.
Differences in signal strength among wireless network cards, phones and tags are a fundamental problem for location fingerprinting. Current solutions require manual and error-prone calibration for each new client to address this problem. This paper proposes hyperbolic location fingerprinting, which records fingerprints as signal- strength ratios between pairs of base stations instead of absolute signal-strength values. The proposed solution has been evaluated by extending two well-known location fingerprinting techniques to hyperbolic location fingerprinting. The extended techniques have been tested on ten- hour-long signal-strength traces collected with five different IEEE 802.11 network cards. The evaluation shows that the proposed solution solves the signal-strength difference problem without requiring extra manual calibration and provides a performance equal to that of existing manual solutions.
Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Signal Processing
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Citations in the corpus
- Spatio-temporal facility utilization analysis from exhaustive WiFi monitoring (2015, background): “from absolute RSSI value computations), and thus can cope well with device heterogeneity [27].”
- A survey of active and passive indoor localisation systems (2012, background): “Indoor localisation systems based on signal strength have the advantage of using the existing WLAN infrastructure, and therefore do not have any extra deployment costs [16].”