当知道一个码的生成矩阵时,求GF(2)上,以输入的码长为4，生成矩阵为G[4][7]为例，线性分组码的最小距离.-When know that a code generated matrix, and GF (2) in order to enter the code length of 4 to generate a matrix for G [4] [7] as an example, the linear block codes of minimum distance.