Lecture 7 : Physiological Signals from Wireless

In order to increase the resolution, we first utilize FMCW to separate signals reflected off from different distances into voxels, so each voxel stands for signal reflected off from a specific distance from the transmitter. Once we have a voxel of interest, we can zoom-in the specific voxel, and analyze the phase shift in that voxel to determine relative movements within that voxel. Figure 1 illustrates the above process.