The active badge location system
ACM Transactions on Information Systems (TOIS)
The cricket compass for context-aware mobile applications
Proceedings of the 7th annual international conference on Mobile computing and networking
Robotics-based location sensing using wireless ethernet
Proceedings of the 8th annual international conference on Mobile computing and networking
Robust Positioning Algorithms for Distributed Ad-Hoc Wireless Sensor Networks
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
GPS-Free Positioning in Mobile ad-hoc Networks
HICSS '01 Proceedings of the 34th Annual Hawaii International Conference on System Sciences ( HICSS-34)-Volume 9 - Volume 9
Multi-Camera Multi-Person Tracking for EasyLiving
VS '00 Proceedings of the Third IEEE International Workshop on Visual Surveillance (VS'2000)
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
Cooperative Location-Sensing for Wireless Networks
PERCOM '04 Proceedings of the Second IEEE International Conference on Pervasive Computing and Communications (PerCom'04)
Localization for mobile sensor networks
Proceedings of the 10th annual international conference on Mobile computing and networking
PERCOM '05 Proceedings of the Third IEEE International Conference on Pervasive Computing and Communications
The Problem of Bluetooth Pollution and Accelerating Connectivity in Bluetooth Ad-Hoc Networks
PERCOM '05 Proceedings of the Third IEEE International Conference on Pervasive Computing and Communications
The Horus WLAN location determination system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
PinPoint: An Asynchronous Time-Based Location Determination System
Proceedings of the 4th international conference on Mobile systems, applications and services
Proceedings of the 1st international conference on Mobile systems, applications and services
Advanced integration of WIFI and inertial navigation systems for indoor mobile positioning
EURASIP Journal on Applied Signal Processing
Large-scale localization from wireless signal strength
AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 1
Location-based media sharing in a MP2P network
ACM SIGMOBILE Mobile Computing and Communications Review
FleXConf: A Flexible Conference Assistant Using Context-Aware Notification Services
OTM '09 Proceedings of the Confederated International Workshops and Posters on On the Move to Meaningful Internet Systems: ADI, CAMS, EI2N, ISDE, IWSSA, MONET, OnToContent, ODIS, ORM, OTM Academy, SWWS, SEMELS, Beyond SAWSDL, and COMBEK 2009
Empirical evaluation of signal-strength fingerprint positioning in wireless LANs
Proceedings of the 13th ACM international conference on Modeling, analysis, and simulation of wireless and mobile systems
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We have designed a novel positioning system, the Cooperative Location-sensing system (CLS) that employs the peer-to-peer paradigm and a probabilistic framework to estimate the position of wireless-enabled devices in an iterative manner without the need for an extensive infrastructure or time-strenuous training. CLS can incorporate signal-strength maps of the environment to improve the position estimates. Such maps have been built using measurements that were acquired from Access Points (APs) and peers during a training phase. This paper makes three important contributions. First, it uses a particle-filters-based framework to model theoretically CLS. Second, it proposes new algorithms that incorporate real-life signal strength measurements from (APs) and peers to estimate position and distance. Third, it evaluates the performance of CLS via real-life measurements and extensive simulation, and compares it with other positioning systems. We have implemented and evaluated the CLS prototype along with its variants using IEEE802.11 and Blue-tooth, and compared its performance with other positioning systems.