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Fusang Zhang

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titleconferencedate
BFMSense: WiFi Sensing Using Beamforming Feedback Matrix21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24)2024-04-16
Paper shows that the beamforming feedback matrix (BFM) from new Wi‑Fi cards carries usable channel information and derives a mathematical relation to CSI, then…
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Your Smart Speaker Can “Hear” Your Heartbeat!UbiComp 20212021-09-21
A prototype uses commodity smart speakers and FMCW chirps plus microphone capture to extract submillimeter chest motion, cancels random system transmission…
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Unlocking the Beamforming Potential of LoRa for Long-range Multi-target Respiration SensingUbiComp 20212021-09-21
System uses a multi-antenna LoRa gateway to form spatial beams and implements a beam nulling division method to cancel the random phase from unsynchronized…
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Exploring LoRa for Long-range Through-wall SensingUbiComp / ISWC 20202020-09-12
Presents a concrete claim that LoRa CSS signals enable long-range contactless sensing and demonstrates a working prototype: a Semtech LoRa transmitter on an…
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