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- W2905295005 abstract "Acoustic Doppler shift estimation is a cost-effective way to implement Human-Computer Interaction applications across existing smart devices such as smart phones and smart spekaers. However, due to the inherent uncertainty principle in the traditional time-frequency analysis, it remains challenging to profile motions accurately and timely. In this paper, phase offset in acoustic OFDM signal is leveraged for developing Phascope, a fine-grained, fast and flexible motion profiling scheme. We evaluate Phascope using simulation and experiment on COTS devices. Sub-millisecond response time is achieved for Phascope in our experiment. Besides, with optimal subcarrier selection and SNR of 30 dB over all subcarriers, Phascope can estimate motion speed of 0.1 m/s with 6.75% root-mean-square error (RMSE) compared to optimized FFT method." @default.
- W2905295005 created "2018-12-22" @default.
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- W2905295005 date "2018-11-05" @default.
- W2905295005 modified "2023-09-26" @default.
- W2905295005 title "Phascope" @default.
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- W2905295005 doi "https://doi.org/10.1145/3286978.3287016" @default.
- W2905295005 hasPublicationYear "2018" @default.
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