A New Smoothed L0 Regularization Approach for Sparse Signal Recovery

Figure 4

Signal recovery effect by different algorithms when noise intensity = 0.2. (a) signal recovery by the BPDN algorithm; (b) signal recovery by the SL0 algorithm; (c) signal recovery by the L2-SL0 algorithm; (d) signal recovery by the -RLS algorithm; (e) signal recovery by the RRSL0 algorithm.

(a)

(b)

(c)

(d)

(e)