Discrete-time signal processing
Discrete-time signal processing
Continuous Recognition of Arm Activities With Body-Worn Inertial Sensors
ISWC '04 Proceedings of the Eighth International Symposium on Wearable Computers
Elements of Information Theory (Wiley Series in Telecommunications and Signal Processing)
Elements of Information Theory (Wiley Series in Telecommunications and Signal Processing)
SAM: enabling practical spatial multiple access in wireless LAN
Proceedings of the 15th annual international conference on Mobile computing and networking
Real-time and markerless 3D human motion capture using multiple views
Proceedings of the 2nd conference on Human motion: understanding, modeling, capture and animation
Achieving single channel, full duplex wireless communication
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Random access heterogeneous MIMO networks
Proceedings of the ACM SIGCOMM 2011 conference
Clearing the RF smog: making 802.11n robust to cross-technology interference
Proceedings of the ACM SIGCOMM 2011 conference
Practical, real-time, full duplex wireless
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
Humantenna: using the body as an antenna for real-time whole-body interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
JMB: scaling wireless capacity with user demands
Proceedings of the ACM SIGCOMM 2012 conference on Applications, technologies, architectures, and protocols for computer communication
ArrayTrack: a fine-grained indoor location system
nsdi'13 Proceedings of the 10th USENIX conference on Networked Systems Design and Implementation
RF-compass: robot object manipulation using RFIDs
Proceedings of the 19th annual international conference on Mobile computing & networking
Proceedings of the Twelfth ACM Workshop on Hot Topics in Networks
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
Bringing gesture recognition to all devices
NSDI'14 Proceedings of the 11th USENIX Conference on Networked Systems Design and Implementation
3D tracking via body radio reflections
NSDI'14 Proceedings of the 11th USENIX Conference on Networked Systems Design and Implementation
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Wi-Fi signals are typically information carriers between a transmitter and a receiver. In this paper, we show that Wi-Fi can also extend our senses, enabling us to see moving objects through walls and behind closed doors. In particular, we can use such signals to identify the number of people in a closed room and their relative locations. We can also identify simple gestures made behind a wall, and combine a sequence of gestures to communicate messages to a wireless receiver without carrying any transmitting device. The paper introduces two main innovations. First, it shows how one can use MIMO interference nulling to eliminate reflections off static objects and focus the receiver on a moving target. Second, it shows how one can track a human by treating the motion of a human body as an antenna array and tracking the resulting RF beam. We demonstrate the validity of our design by building it into USRP software radios and testing it in office buildings.