liu

代码是自行编写的基-2FFT算法，并与MATLAB系统自带的FFT作比较(This is code for fft2dit， which is self-coding. compare is considered between fft and fft2dit)

时间序列预测ARIMA模型，这是一种基于风速数据的预测程序。(ARIMA time series forecasting model, which is a program based on the forecast wind speed data.)

说明：  声学 边界元程序 matlab(boundary element acoustics Fundamentals and coputer codes)

说明：  现代通信系统的全文程序，超全的，超赞，很好的哟，很好(The full text of procedures of modern communication systems, ultra wide, ultra Zambia)

matlab程序：将输入的字符按照ASCII码排序后输出(matlab program: the input characters are sorted according to the ASCII code output)

Encoding of LDPC codes

实现QPSK调制，映射成星座图上对应的复数点；将星座图上的复数点作QPSK解调。 16和64位QAM调制。(The QPSK modulation is mapped into the corresponding complex points on the constellation diagram, and the complex points on the constellation diagram are demodulated by QPSK. 16 bit and 64 bit QAM modulation.)

说明：  在matlab中开发了一种如何使算法收敛更快，精度更高的算法，效果明显(developed in the Matlab how a convergence algorithm faster and more precise algorithms, obviously)

根据高等转子动力学内容，编程计算转子-轴系固有扭振频率代码，每一步均配有相应的注释说明。(According to the higher rotor dynamic content, programming calculation of rotor shafting torsional vibration inherent frequency code, each step with the corresponding notes.)

详细介绍matlab的许多有用的功能和一些重要功能的语法，并加一些经典试验(Matlab detail the many useful features and some important features of the grammar, and add some classical test)