The active badge location system
ACM Transactions on Information Systems (TOIS)
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
LANDMARC: indoor location sensing using active RFID
Wireless Networks - Special issue: Pervasive computing and communications
The Horus WLAN location determination system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Sensor-assisted wi-fi indoor location system for adapting to environmental dynamics
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
COMPASS: A probabilistic indoor positioning system based on 802.11 and digital compasses
WiNTECH '06 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization
Analysis of WLAN's received signal strength indication for indoor location fingerprinting
Pervasive and Mobile Computing
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Indoor positioning has gained more and more interest lately since it offers the possibility of using the location information in several network functionalities improvement or user services deployment. In this paper, we consider the case of WLAN-based indoor positioning for its simplicity and ease of deployment. With our focus on scene analysis methods, we study both deterministic and probabilistic schemes and try to improve their accuracy performance without increasing the processing and hardware requirements of the system. More precisely, orientation-based sampling of WiFi signal strength (SS) measurements and simple pre-processing of these samples are proposed for mitigating the inherent impairments of the wireless medium. Results based on real experimental measurements showed a considerable accuracy increase especially for the deterministic case.