针对QC_LDPC码校验矩阵的结构特性，研究了BP算法的特点，并利用TMS320C6747系列DSP作为实现平台，成功实现了基于BP算法的QC_LDPC码译码器（有源程序与报告）-For structural characteristics QC_LDPC code parity check matrix to study the characteristics of BP algorithm, and using TMS320C6747 series DSP as the implementation platform, based on the successful implementation of the BP algorithm QC_LDPC code decoder (with source code and reports)