In this paper, a Compressive Sampling (CS) based measurement method of the Bio-Impedance. (Bio-Z) variation at the wrist, due to the blood flow inside of radial artery, is presented, allowing to estimate the pulse wave. The method uses as stimulus a known pulse-like waveform (e.g., a pseudo-random sequence) and it compressively samples the resulting signal with the goal of obtaining the impulse response variation of the wrist Bio-Z. The mathematical steps describing the method, the 3D electrical model of the wrist used for simulations as well as the experimental investigations are reported. The experimental results show that the proposed measurement method could be successful used to estimate the radial artery pulse wave, feature that could be further used in Blood Pressure computation.
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