Fusion of Channel State Information and Received Signal Strength for Indoor Localization Using a Single Access Point

Remote Sensing

JavierJ. Sánchez-Medina¹  David Sánchez-Rodríguez²  Itziar Alonso-González²  Carlos Ley-Bosch²  MiguelA. Quintana-Suárez³ 

[1] Innovation Center for Information Society, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Spain;Institute for Technological Development and Innovation in Communications, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Spain;Telematic Engineering Department, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Spain;

关键词: channel state information;    amplitude processing;    received signal strength;    indoor localization;    fingerprinting;    features fusion;   

DOI  :  10.3390/rs12121995

来源: DOAJ

【 摘 要 】

In recent years, indoor localization systems based on fingerprinting have had significant advances yielding high accuracies. Those approaches often use information about channel communication, such as channel state information (CSI) and received signal strength (RSS). Nevertheless, these features have always been employed separately. Although CSI provides more fine-grained physical layer information than RSS, in this manuscript, a methodology for indoor localization fusing both features from a single access point is proposed to provide a better accuracy. In addition, CSI amplitude information is processed to remove high variability information that can negatively influence location estimation. The methodology was implemented and validated in two scenarios using a single access point located in two different positions and configured in 2.4 and 5 GHz frequency bands. The experiments show that the methodology yields an average error distance of about 0.1 m using the 5 GHz band and a single access point.

【 授权许可】

Unknown