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

fYear

2014

fDate

19-23 Jan. 2014

Firstpage

55

Lastpage

57

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WiSNet.2014.6825497

Filename

6825497