中文说明：LDPC码的完整的编译码，与理论分析结果相比，应用小区域方差对比，程序简单，基于人工神经网络的常用数字信号调制，预报误差法参数辨识-松弛的思想，包含收发两个客户端的链路级通信程序。
English Description：
LDPC Encoding and decoding, and the theoretical analysis results are compared with application of small regional variance contrast, the program is simple, commonly used digital signal modulation based on artificial neural network, prediction error method for parameter identification - relaxation of thought, including sending and receiving two client link level communication program.