Figure 10
From: Removing non-stationary noise in spectrum sensing using matrix factorization
NMF versus SVD. A performance comparison: NMF versus SVD. Here the SVD curve displays an instant peak at a received power value of P r x =-168 dBm/Hz which is due to the outliers, i.e., non-negative values. This is not the case for NMF which shows a curve without the instant outlier peak. Both algorithms ran with the same number of independent principal components: L=300.