We can hear you with Wi-Fi!
Recent literature advances Wi-Fi signals to “see” people’s motions and locations. This paper asks the following question: Can Wi-Fi “hear” our talks? We present WiHear, which enables Wi-Fi signals to “hear” our talks without deploying any devices. To achieve this, WiHear needs to detect and analyze...
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sg-smu-ink.sis_research-55442019-12-26T09:08:28Z We can hear you with Wi-Fi! WANG, Guanhua ZOU, Yongpan ZHOU, Zimu WU, Kaishun NI, Lionel M. Recent literature advances Wi-Fi signals to “see” people’s motions and locations. This paper asks the following question: Can Wi-Fi “hear” our talks? We present WiHear, which enables Wi-Fi signals to “hear” our talks without deploying any devices. To achieve this, WiHear needs to detect and analyze fine-grained radio reflections from mouth movements. WiHear solves this micro-movement detection problem by introducing Mouth Motion Profile that leverages partial multipath effects and wavelet packet transformation. Since Wi-Fi signals do not require line-of-sight, WiHear can “hear” people talks within the radio range. Further, WiHear can simultaneously “hear” multiple people’s talks leveraging MIMO technology. We implement WiHear on both USRP N210 platform and commercial Wi-Fi infrastructure. Results show that within our pre-defined vocabulary, WiHear can achieve detection accuracy of 91% on average for single individual speaking no more than 6 words and up to 74% for no more than 3 people talking simultaneously. Moreover, the detection accuracy can be further improved by deploying multiple receivers from different angles. 2016-01-01T08:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/4541 info:doi/10.1109/TMC.2016.2517630 https://ink.library.smu.edu.sg/context/sis_research/article/5544/viewcontent/WiHear_MobiCom14.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Wi-Fi Radar Micro-motion Detection Moving Pattern Recognition Interference Cancelation Digital Communications and Networking Software Engineering |
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Wi-Fi Radar Micro-motion Detection Moving Pattern Recognition Interference Cancelation Digital Communications and Networking Software Engineering WANG, Guanhua ZOU, Yongpan ZHOU, Zimu WU, Kaishun NI, Lionel M. We can hear you with Wi-Fi! |
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Recent literature advances Wi-Fi signals to “see” people’s motions and locations. This paper asks the following question: Can Wi-Fi “hear” our talks? We present WiHear, which enables Wi-Fi signals to “hear” our talks without deploying any devices. To achieve this, WiHear needs to detect and analyze fine-grained radio reflections from mouth movements. WiHear solves this micro-movement detection problem by introducing Mouth Motion Profile that leverages partial multipath effects and wavelet packet transformation. Since Wi-Fi signals do not require line-of-sight, WiHear can “hear” people talks within the radio range. Further, WiHear can simultaneously “hear” multiple people’s talks leveraging MIMO technology. We implement WiHear on both USRP N210 platform and commercial Wi-Fi infrastructure. Results show that within our pre-defined vocabulary, WiHear can achieve detection accuracy of 91% on average for single individual speaking no more than 6 words and up to 74% for no more than 3 people talking simultaneously. Moreover, the detection accuracy can be further improved by deploying multiple receivers from different angles. |
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text |
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WANG, Guanhua ZOU, Yongpan ZHOU, Zimu WU, Kaishun NI, Lionel M. |
author_facet |
WANG, Guanhua ZOU, Yongpan ZHOU, Zimu WU, Kaishun NI, Lionel M. |
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WANG, Guanhua |
title |
We can hear you with Wi-Fi! |
title_short |
We can hear you with Wi-Fi! |
title_full |
We can hear you with Wi-Fi! |
title_fullStr |
We can hear you with Wi-Fi! |
title_full_unstemmed |
We can hear you with Wi-Fi! |
title_sort |
we can hear you with wi-fi! |
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Institutional Knowledge at Singapore Management University |
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2016 |
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https://ink.library.smu.edu.sg/sis_research/4541 https://ink.library.smu.edu.sg/context/sis_research/article/5544/viewcontent/WiHear_MobiCom14.pdf |
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