摘要
A review of signal processing algorithms employing Wi-Fi signals for positioning and recognition of human activities is presented.The principles of how channel state information(CSI)is used and how the Wi-Fi sensing systems operate are reviewed.It provides a brief introduction to the algorithms that perform signal processing,feature extraction and recognitions,including location,activity recognition,physiological signal detection and personal identification.Challenges and future trends of Wi-Fi sensing are also discussed in the end.
基金
National Natural Science Foundation of China(NSFC)under Grant No.61401100
Natural Science Foundation of Fuji⁃an Province under Grant No.2018J01805
Youth Research Project of Fujian Provincial Department of Education under Grant No.JAT190011
and Fuzhou University Scientific Research Fund Project under Grant No.GXRC-18074.
