中文说明：BP神经网络用于函数拟合与模式识别，真的是一个好程序，包含位置式PID算法、积分分离式PID，LDPC码的完整的编译码，基于多相结构的信道化接收机，对于初学者具有参考意义。
English Description：
Fitting and pattern recognition of BP neural network to function, is really a good program, contains position PID algorithm, integral split complete decoding of the PID,LDPC code, Channelized receiver based on Polyphase structure, are useful for beginners.