With the rapid development of wireless communication technology, various indoor location‐
based services (ILBSs) have gradually penetrated into daily life. Although many other …

Radio Frequency Identification (RFID) has become a key enabler for the Industrial Internet of
Things (IIoT). By taking advantage of the backscattered radio waves, the identity and …

This paper presents Widar2. 0, the first WiFi-based system that enables passive human
localization and tracking using a single link on commodity off-the-shelf devices. Previous …

Various pioneering approaches have been proposed for Wi-Fi-based sensing, which usually
employ learning-based techniques to seek appropriate statistical features, yet do not support …

Decimeter-level localization has become a reality, in part due to the ability to eliminate the
effects of multipath interference. In this paper, we demonstrate the ability to use multipath …

Although Maxwell discovered the physical laws of electromagnetic waves 160 years ago,
how to precisely model the propagation of an RF signal in an electrically large and complex …

Wireless signals have been extensively utilized for contactless sensing in the past few years.
Due to the intrinsic nature of employing the weak target-reflected signal for sensing, the …

Target imaging and material identification play an important role in many real-life
applications. This paper introduces TagScan, a system that can identify the material type …

WiFi-based device-free motion tracking systems track persons without requiring them to
carry any device. Existing work has explored signal parameters such as time-of-flight (ToF) …

Contactless acoustic motion tracking enables new opportunities to interact with smart
devices, such as smartphones and voice-controlled smart assistants. The speakers and …