一般离散信道的迭代算法。信道能无错误传送的最大信息率。对于只有一个信源和一个信宿的单用户信道，它是一个数，单位是比特每秒或比特每符号。-Iterative algorithms are generally discrete channel. Channel can be transmitted without errors maximum information rate. For only one source and a sink of the single-user channel, it is a number, in units of bits per second or bit per symbol.