Exact CS Reconstruction Condition of Undersampled Spectrum-Sparse Signals

Figure 1

The sparsity of 𝛼_𝑛 when 𝑁=1024, 𝑀=64, 𝑟=16, and 𝑎=40. (a) {|𝛼_𝑛|}; (b) {real(𝛼_𝑛)}; (c) {imag(𝛼_𝑛)}.

(a)

(b)

(c)