Fig. 7.

Ratio ${\Vert x^{(\ell +1)}-\overline{x}\Vert }_{0.5}^{0.5}/{\Vert x^{(\ell )}-\overline{x}\Vert }_{0.5}^{0.5}$ as a function of ℓ and SNR, for ν = 0.5 and fixed ε(5) = 10⁻⁴. The figure shows that the IRLS converges with a relatively small number of iterations (ℓ).