Figure 11

Relative error vector magnitude. Relative magnitude of the setting error of the fast algorithm when compared to the gradient search algorithm $\sqrt{|\widehat{x}-{\widehat{x}}_{\mathrm{G}}{|}^2+|ŷ-{ŷ}_{\mathrm{G}}{|}^2}/N$, plotted on the I/Q space of CCU1 on the estimated leakage values ${\widehat{x}}_{\mathrm{G}}$ and ${ŷ}_{\mathrm{G}}$ (compare with Fig. six in [25], with permission from the IEEE).