Title :
System and signal design for an energy-efficient multi-frequency localization system
Author :
Nowak, T. ; Hierold, Martin ; Koelpin, Alexander ; Hartmann, M. ; Troger, Hans-Martin ; Thielecke, Jorn
Author_Institution :
Inst. of Inf. Technol. (Commun. Electron.), Friedrich-Alexander-Univ. Erlangen-Nurnberg, Tennenlohe, Germany
Abstract :
In this paper a concept for an energy-efficient multi-frequency localization system is proposed. The system design aims at extremely light-weight, and thus energy-efficient tags. The localization system is realized by a Wireless Sensor Network comprising signal strength and phase measurements. The concept is based on signals for phase-based ranging. The proposed signals have to meet several constraints: low-power signal generation, efficient signal pro-cessing, and, most important, precise range estimation. The performance of the range estimation is assessed utilizing the Cramér-Rao Lower Bound.
Keywords :
phase measurement; signal processing; wireless sensor networks; Cramér-Rao lower bound; energy-efficient multifrequency localization system; energy-efficient tags; low-power signal generation; phase measurements; phase-based ranging; range estimation; signal processing; signal strength measurements; system design; wireless sensor network; Bandwidth; Distance measurement; Energy efficiency; Estimation; Receivers; Signal to noise ratio; Wireless sensor network; localization; multi-frequency; phase-based ranging;
Conference_Titel :
Wireless Sensors and Sensor Networks (WiSNet), 2014 IEEE Topical Conference on
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/WiSNet.2014.6825497
