Abstract: Methods and systems for user velocity tracking using wireless technology. A computer-implemented method includes sending one or more frames to one or more transceivers to initiate a process of frame exchanges, receiving, based on the frame exchanges, channel state information (CSI) having one or more CSI impairments, processing the CSI to adjust the one or more CSI impairments of the CSI to generate a plurality of cleaned CSI metrics, and estimating a velocity of a user using the plurality of cleaned CSI metrics.

Abstract: In some embodiments of the invention, a millimeter wave (mmWave) backscatter network node includes a frequency scanning antenna (FSA) having at least one port, the FSA including an array of emitting elements such that, given an incoming signal resulting in emitting signal from the emitting elements, the direction in which emitting signals combine constructively changes with the frequency of the incoming signal, and a radio frequency (RF) signal processing unit configured to measure strength and determine frequency of a received signal that is received by a first port of the FSA.