完整的ldpc编码程序，实现数字载体的ldpc编码译码以及信道传输仿真,利用生成矩阵和校验矩阵实现，含有自动生成随机错误以检测纠错能力功能-Ldpc complete coding procedures, digital carrier ldpc codec and channel transmission simulation using the generator matrix and parity check matrix realization, containing automatic generation of random error correction ability to detect functional