Figure 7
From: Limiting spectral distribution of the sample covariance matrix of the windowed array data
Support of eigenvalues in the signal plus noise case using exponential window with c 0  = 0.4 for four distinct eigenvalues λ 4  = 5 , λ 3  = 3 , λ 2  = 2 , λ 1  = 1 with multiplicities α 1  = α 2  = α 3  = 0.1 and α 4  = 0.7 .