TY - GEN
T1 - Decimeter-level localization with a single WiFi access point
AU - Vasisht, Deepak
AU - Kumar, Swarun
AU - Katabi, Dina
N1 - Funding Information:
We thank the NETMIT group, Arthur Berger, our reviewers and our shepherd, Alex Snoeren, for their insightful comments. This work is funded by NSF. We thank members of the MIT Center for Wireless Networks and Mobile Computing: Amazon, Cisco, Google, Intel, Mediatek, Microsoft, ST Microelectronics and Telefonica for their interest and support.
Funding Information:
Acknowledgements: We thank the NETMIT group, Arthur Berger, our reviewers and our shepherd, Alex Snoeren, for their insightful comments. This work is funded by NSF. We thank members of the MIT Center for Wireless Networks and Mobile Computing: Amazon, Cisco, Google, Intel, Mediatek, Microsoft, ST Microelectronics and Telefonica for their interest and support.
PY - 2016
Y1 - 2016
N2 - We present Chronos, a system that enables a single WiFi access point to localize clients to within tens of centimeters. Such a system can bring indoor positioning to homes and small businesses which typically have a single access point. The key enabler underlying Chronos is a novel algorithm that can compute sub-nanosecond time-of-flight using commodity WiFi cards. By multiplying the time-of-flight with the speed of light, a MIMO access point computes the distance between each of its antennas and the client, hence localizing it. Our implementation on commodity WiFi cards demonstrates that Chronos’s accuracy is comparable to state-of-the-art localization systems, which use four or five access points.
AB - We present Chronos, a system that enables a single WiFi access point to localize clients to within tens of centimeters. Such a system can bring indoor positioning to homes and small businesses which typically have a single access point. The key enabler underlying Chronos is a novel algorithm that can compute sub-nanosecond time-of-flight using commodity WiFi cards. By multiplying the time-of-flight with the speed of light, a MIMO access point computes the distance between each of its antennas and the client, hence localizing it. Our implementation on commodity WiFi cards demonstrates that Chronos’s accuracy is comparable to state-of-the-art localization systems, which use four or five access points.
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M3 - Conference contribution
AN - SCOPUS:85073923570
T3 - Proceedings of the 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016
SP - 165
EP - 178
BT - Proceedings of the 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016
PB - USENIX Association
T2 - 13th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2016
Y2 - 16 March 2016 through 18 March 2016
ER -