中国数字调频广播技术方案CDRadio实现了真正的带内数模混叠同播，并通过使用非规则频谱分配、LDPC纠错编码、时间分片等关键技术，获得了更好的性能增益。-CDRadio supports the real in-band mixed broadcast of both digital and analog signals，and gains better performance by adopting key technologies such as irregular spectrum

LDPC非规则二进制校验矩阵生成函数，可生成任意规格的校验矩阵-Irregular LDPC binary check matrix generating function, can generate arbitrary specifications checksum matrix

Adaptive Quantization in Min-Sum based Irregular LDPC Decoder. this is a good method for LDPC decoder