Hamming distortion
= Hamming distortion
Hamming distortion is $d(x,y)=\mathbf1_{\{x\ne y\}}$, so its expected distortion is the symbol-error probability.
= Hamming distortion
Hamming distortion is $d(x,y)=\mathbf1_{\{x\ne y\}}$, so its expected distortion is the symbol-error probability.