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3 2p20p0p1 log q0 log q1 c q0 q1 1 2 c 1 2 20c 0c c1

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Unformatted text preview: 分别 为 A {0,1},B {0,1} ,信道转移概率p(y/x)满 ,信道转移概率p(y/x)满 足 P / X (0 | 0) P / X (1|1) 1 ,ε称为错误率。写出 Y Y 信道的转移概率矩阵并画出转移概率图。 解: 转移概率矩阵 1 [ P] 1 转移概率图 0 1-ε 0 ε ε 1 1-ε 1 单符号离散信道 单符号离散信道 例 1.2 二元删除信道:其中A={0,1}, B={0,2,1}画 B={0 出转移概率图和转移概率矩阵。 解: 转移概率矩阵 p P 0 1 p 1 q 0 q 转移概率图 0 p 0 1-p 2 1-q 1 q 1 单符号离散信道 单符号离散信道 例 1.3 011 四个等概消息,编成的码字为 M 1 000,M 2 011 M 3 101 ,M 4 110,当通过下图所示二进制对称 ,当通过下 无记忆信道传输时,求: 1)“接收到第一个数字为0”与“发M1”的互信息 接收到第一个数字为0 2)当“接收到第二个数字也为0”时,关于M1的附加信息 接收到第二个数字也为0 关于M 3)当“接收到第三个数字也为0”时,又增加多少关于M1 ...
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