Compressive Covariance Sensing-Based Power Spectrum Estimation of Real-Valued Signals Subject to Sub-Nyquist Sampling

<div>Flowchart of the alpha-based and improved alpha-based methods of power spectrum estimation using the Fourier basis for the Toeplitz subspace. The dashed boxes concern the proposed improved alpha-based method.</div>

Modelling and Simulation in Engineering

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Figure 3

Figure 3: Compressive Covariance Sensing-Based Power Spectrum Estimation of Real-Valued Signals Subject to Sub-Nyquist Sampling 