The use of radio-frequency signals for passive indoor applications has gained significant
interest over the last years. By leveraging ubiquitous Wi-Fi signals, the Doppler information …

WiFi based passive sensing is attracting considerable interest in the scientific community for
both research and commercial purposes. In this work, we aim at taking a step forward in an …

Passive radars opportunistically capture communications signals to detect and track targets
in the environment. Since Wi-Fi signals are widely available today, they can be used by …

The opportunistic use of ambient radio-frequency (RF) signals for e-healthcare, smart living,
security, and IoT applications has been attracting significant attention over the last years …

As wireless sensing and communications technologies continue to advance, the limited
bandwidth in the microwave and millimeter-wave spectra has sparked new research in …

In this paper, we examine the potentiality of passive coherent location (PCL) for indoor area
monitoring. In particular, we show that Wi-Fi transmissions can be successfully exploited as …

Passive Wi-Fi based Radar (PWR) is a device that makes use of existing Wi-Fi signals to
detect/track targets in the environment. Therefore, the radar processing at the PWR largely …

The use of WiFi signals for sensing purposes has attracted a lot of interest from both the
radar and communications communities and several techniques have been explored. In the …

A highly accurate 3-D indoor passive localization and identification system is presented in
this article. The system can monitor various commercial Wi-Fi devices through the proposed …

In the past decades, dramatic investments and growth in wireless communication have
occupied more and more radio frequency (RF) spectrum and created a shortage in the …