●●● ●●● ●●●●● ●●● 对称DMC容量计算 ●●● ●●●● ●●0● C=lgJ+∑p(|k)ogp(|k) K元对称信道:C=logK-H(p)-plog(K-1) 二元对称信道:C 准对称信道:C=(1-p-q)log(1-p-q)+ plogp(1-q)og(1-q/2) ●二元纯删除信道:C对称DMC容量计算 ⚫ K元对称信道: C = logK - H(p) - plog(K-1) ⚫ 二元对称信道: C = 1 - H(p) ⚫ 准对称信道:C=(1-p-q)log(1-p-q)+plogp-(1-q)log((1-q)/2) ⚫ 二元纯删除信道: C=1-q 1 0 log ( | )log ( | ) J j C J p j k p j k − = = +