Evaluation of BLE Separate Channel Fingerprinting in Practical Environment

This paper presents an actual BLE-based indoor localization system utilizing separate channel fingerprinting. Separate channel fingerprinting measures RSS (received signal strength) of BLE signals in three advertising channels to enhance location-specific features for accuracy improvement. The basic ideas of separate channel fingerprinting was presented in our previous work lacking evaluation of localization accuracy in a practical environment. We therefore present design and implementation of a localization system utilizing separate channel fingerprinting. We conducted experimental evaluation and demonstrated that the separate channel fingerprinting successfully improved localization accuracy by approx. 28.5%.

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