LAUSR

With the increasing demand of location-based services, indoor localization based on fingerprinting has become an increasingly important technique due to its high accuracy and low hardware requirement. The paper presents a novel fingerprinting system with a fine-grained information known as channel state information (CSI). The proposed fingerprint exploits multiple antennas and subcarriers of the IEEE 802.11n network using multiple input multiple output (MIMO)–orthogonal frequency division multiplexing system and takes account into the distance of features in each fingerprint. The experimental performance of the fingerprint is compared with RSSI-based Fingerprinting system and the CSI–MIMO Fingerprinting system. The experiment results show that the system achieves the accuracy of 0.61 and 0.9 m in static and dynamic scenarios respectively.