On CSI-Based Vital Sign Monitoring Using Commodity WiFi

被引：51
作者：
Wang X. [1 ]
Yang C. [2 ]
Mao S. [2 ]
机构：
[1] Department of Computer Science, California State University, Sacramento, 95819-6021, CA
[2] Department of Electrical and Computer Engineering, Auburn University, Auburn, 36849-5201, AL
来源：
| 1600年 / Association for Computing Machinery卷 / 01期
关键词：
Channel state information; commodity 5-GHz WiFi; health sensing; vital sign monitoring;
D O I：
10.1145/3377165
中图分类号：
学科分类号：
摘要：
Vital signs, such as respiration and heartbeat, are useful for health monitoring because such signals provide important clues of medical conditions. Effective solutions are needed to provide contact-free, easy deployment, low-cost, and long-term vital sign monitoring. In this article, we present PhaseBeat to exploit channel state information, in particular, phase difference data to monitor breathing and heart rates with commodity WiFi devices. We provide a rigorous analysis of channel state information phase difference with respect to its stability and periodicity. Based on the analysis, we design and implement the PhaseBeat system with off-the-shelf WiFi devices and conduct an extensive experimental study to validate its performance. Our experimental results demonstrate the superior performance of PhaseBeat over existing approaches in various indoor environments. © 2020 ACM.
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