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

Figure 5

Normalized mean square spectrum estimation error NMSE vs. SNR for two methods using the Fourier basis: the alpha-based and the Blackman-Tukey estimation through LS-CCS, and for two different compression ratios: 8/21 () and 11/21 ().