Fig. 8
From: Frequency-domain equalizers with zero restoration for zero-padded block transmission with high SNR
The noise contribution to the MSE for different spectral responses \(\protect \phantom {\dot {i}\!}\lambda _{\mathrm {e}_{\mathrm {i}}}\). For high SNR (right hand side), the MSE is dominated by the noise contribution of the sub-carriers with the lowest spectral response (close-to-zeros)