期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2016
卷号：5
期号：2
页码：15761-15769
DOI：10.18535/ijecs/v5i2.18
出版社：IJECS
摘要：Can WiFi signals be used for sensing purpose? The growing PHY layer capabilities of WiFi has made it possible to reuse WiFisignals for both communication and sensing. Sensing via WiFi would enable remote sensing without wearable sensors,simultaneous perception and data transmission without extra communication infrastructure, and contactless sensing inprivacy-preserving mode. Due to the popularity of WiFi devices and the ubiquitous deployment of WiFi networks, WiFi-basedsensing networks, if fully connected, would potentially rank as one of the world’s largest wireless sensor networks. Yet theconcept of wireless and sensorless sensing is not the simple combination of WiFi and radar. It seeks breakthroughs fromdedicated radar systems, and aims to balance between low cost and high accuracy, to meet the rising demand for pervasiveenvironment perception in everyday life. Despite increasing research interest, wireless sensing is still in its infancy. Throughintroductions on basic principles and working prototypes, we review the feasibilities and limitations of wireless, sensorless, andcontactless sensing via WiFi. We envision this article as a brief primer on wireless sensing for interested readers to explore thisopen and largely unexplored field and create next-generation wireless and mobile computing applications
关键词：Channel State Information (CSI); sensorless sensing; WiFi; indoor localization; device-free;human detection; activity recognition; wireless networks; ubiquitous computing
