DocumentCode :
2624926
Title :
Ultimate precision bound and comparison study of dynamic indoor localization systems
Author :
Ji, Yiming
Author_Institution :
Univ. of South Carolina, Beaufort, SC, USA
fYear :
2010
fDate :
12-15 April 2010
Firstpage :
149
Lastpage :
156
Abstract :
Many location determination systems have been developed lately due to growing demands on location based applications and services, however, the performance of most systems is not well understood because a typical indoor system would depend on a lot of factors and the conditions under which reported tests were carried out could be very different. In this work, we analyze theoretical localization limits and propose a precision bound as a benchmark standard to evaluate the performance of indoor systems under different configuration settings and environmental dynamics. We examine a set of localization mechanisms using data sets measured from an underground floor plan. We compare the performance of these systems and analyze their unique responses to the change of system configurations (such as sniffer deployment methods and reference measurements) and localization processing techniques, we found that database-based indoor systems generally perform better than the distance-based systems. From the comparison study, we observed that while it appears difficult to interpret the relationship between the performance of a localization system and various environmental and system factors, the achievable precision of a location determination system deployed at a given building is bounded and this bound is predictable. Thus this research provides a valuable criterion for the evaluation of location determination systems.
Keywords :
database management systems; indoor radio; mobile computing; database-based system; distance-based system; dynamic indoor localization system; environmental dynamics; localization limits; localization mechanism; location based application; location based service; location determination system; precision bound; reference measurement; sniffer deployment; system configuration; system performance; underground floor plan; Benchmark testing; Databases; Floors; Frequency measurement; Mobile computing; Mobile radio mobility management; Performance analysis; Performance evaluation; System testing; Ubiquitous computing; Benchmark; Location Determination; Precision Bound; Signal Strength;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Conference (EW), 2010 European
Conference_Location :
Lucca
Print_ISBN :
978-1-4244-5999-5
Type :
conf
DOI :
10.1109/EW.2010.5483408
Filename :
5483408
Link To Document :
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