Tracking moving devices with the cricket location system
Proceedings of the 2nd international conference on Mobile systems, applications, and services
The Horus WLAN location determination system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Fundamentals of wireless communication
Fundamentals of wireless communication
PinPoint: An Asynchronous Time-Based Location Determination System
Proceedings of the 4th international conference on Mobile systems, applications and services
The cricket indoor location system
The cricket indoor location system
Enabling Mobile Phones To Support Large-Scale Museum Guidance
IEEE MultiMedia
Advancing wireless link signatures for location distinction
Proceedings of the 14th ACM international conference on Mobile computing and networking
Indoor localization without the pain
Proceedings of the sixteenth annual international conference on Mobile computing and networking
SecureAngle: improving wireless security using angle-of-arrival information
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
SpinLoc: spin once to know your location
Proceedings of the Twelfth Workshop on Mobile Computing Systems & Applications
Proceedings of the 10th international conference on Mobile systems, applications, and services
You are facing the Mona Lisa: spot localization using PHY layer information
Proceedings of the 10th international conference on Mobile systems, applications, and services
No need to war-drive: unsupervised indoor localization
Proceedings of the 10th international conference on Mobile systems, applications, and services
Zee: zero-effort crowdsourcing for indoor localization
Proceedings of the 18th annual international conference on Mobile computing and networking
PinPoint: localizing interfering radios
nsdi'13 Proceedings of the 10th USENIX conference on Networked Systems Design and Implementation
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This paper shows the viability of precise indoor localization using physical layer information in WiFi systems. We find that channel frequency responses across multiple OFDM sub-carriers can be suitably aggregated into a location fingerprint. While these fingerprints vary over time and environmental mobility, we notice that their core structure preserves certain properties that are amenable to localization. We demonstrate these ideas through a functional prototype, implemented on off-the-shelf Intel 5300 cards (that export per-subcarrier information to the driver). We evaluate the prototype using the existing APs inside a busy building, a cafeteria, and a museum, and demonstrate localization accuracies in the granularity of 1m × 1m boxes, called spots. Results show that our system, PinLoc, is able to localize users to a spot with 90% mean accuracy, while incurring less than 6% false positives. We believe this holds promise towards an important development in indoor localization.