Ultra-Low-Power Quantized-RSSI-based Localization Using Wake-Up Receivers
Konferenz: Smart SysTech 2017 - European Conference on Smart Objects, Systems and Technologies
20.06.2017 - 21.06.2017 in Munich, Germany
Tagungsband: ITG-Fb. 273: Smart SysTech 2017
Seiten: 7Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Babik, Toni; Milosiu, Heinrich; Oehler, Frank (Integrated Circuits and Systems Department Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany)
Localization capability is a key feature within the developing Internet of Things. This paper proposes an optimal and efficient system solution, based on ultra-low-power wake-up receiver hardware. To that end, a beacon-based quantized-RSSI maximum likelihood approach is employed. Measurements leading to an adapted log-distance path loss model are presented for an exemplary warehouse test environment, forming the basis for the statistical derivations. It is further shown that the hardware-imposed quantization of input power measurements does not significantly impair localization accuracy, while enabling efficient integration of the algorithm. Measurements confirm a mean error of 0.86 meters, with 80 % of distance errors below 1 m.