Daqing Zhang
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| title | conference | date |
|---|---|---|
| BFMSense: WiFi Sensing Using Beamforming Feedback Matrix | 21st 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… | ||
| WiPhone: Smartphone-based Respiration Monitoring Using Ambient Reflected WiFi Signals. | UbiComp 2021 | 2021-09-21 |
WiPhone is a smartphone implementation that uses ambient reflected WiFi CSI to estimate chest displacement and respiration rate, running on a Google Nexus 5… | ||
| Towards Position-Independent Sensing for Gesture Recognition with Wi-Fi | UbiComp 2021 | 2021-09-21 |
Claims a hand-oriented view and a concrete feature called Motion Navigation Primitive (MNP) that uses the ratio of dynamic phase changes from two pairs of… | ||
| Watching Your Phone’s Back: Gesture Recognition by Sensing Acoustical Structure-borne Propagation | UbiComp 2021 | 2021-09-21 |
StruGesture senses structure-borne propagation using phone speakers/microphones and ultrasonic chirps, isolates structure-borne from air-borne paths via a Peak… | ||
| Your Smart Speaker Can “Hear” Your Heartbeat! | UbiComp 2021 | 2021-09-21 |
A prototype uses commodity smart speakers and FMCW chirps plus microphone capture to extract submillimeter chest motion, cancels random system transmission… | ||
| Unlocking the Beamforming Potential of LoRa for Long-range Multi-target Respiration Sensing | UbiComp 2021 | 2021-09-21 |
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… | ||
| WiBorder: Precise Wi-Fi based Boundary Sensing via Through-wall Discrimination | UbiComp / ISWC 2020 | 2020-09-12 |
WiBorder claims precise Wi‑Fi sensing boundaries by discriminating through‑wall vs. inside reflections using Channel State Information from commodity devices… | ||
| Exploring LoRa for Long-range Through-wall Sensing | UbiComp / ISWC 2020 | 2020-09-12 |
Presents a concrete claim that LoRa CSS signals enable long-range contactless sensing and demonstrates a working prototype: a Semtech LoRa transmitter on an… | ||
| FingerDraw: Sub-wavelength Level Finger Motion Tracking with WiFi Signals | UbiComp / ISWC 2020 | 2020-09-12 |
FingerDraw reconstructs air-drawn trajectories using commodity WiFi by forming a CSI-quotient between two antennas to cancel amplitude and phase noise, then… | ||
| Will Online Digital Footprints Reveal Your Relationship Status? An Empirical Study of Social ... | UbiComp / ISWC 2020 | 2020-09-12 |
Using a dataset of 2,359 users from SMM-oriented apps the study claims online footprints predict relationship status by extracting four footprint… | ||
| MultiSense: Enabling Multi-person Respiration Sensing with Commodity WiFi | UbiComp / ISWC 2020 | 2020-09-12 |
MultiSense uses CSI from a single pair of commodity WiFi transceivers (three antennas each), models received signals as linear mixtures, and separates… | ||
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