contemporary-communication-system-

说明：  在计算机上实现直流电动机的脉宽调速、双闭环晶闸管调速的Simulink仿真，可以较为形象的观察电动机的调速全过程，同时可以改变相关参数来实现不同情况下的调速过程。(The computer realization of the PWM DC Motor Speed Control, dual-closed-loop speed control thyristor Simulink simulation, the image can be observed the whole process of motor speed, while the relevant parameters can change under different circumstances to achieve the speed control process.)

这是一本利用matlab编程环境实现信号处理的教程，有兴趣的同学可以看看。(This is a programming environment used to achieve signal processing matlab tutorial, students who are interested can look at.)

该代码能够实现改进的线性调频Z变换的功能，取代FFT变换能够起到细化频谱的作用。(The code can achieve improved chirp Z transform function, replace the FFT spectrum can play a role in refinement.)

较为详细地介绍了单同步坐标系软件锁相环，采用了单一的同步坐标系锁相控制结构，一般适用于电网电压平衡时的相位，频率及幅值的检测，以及用于多种控制结构中（下垂控制，PQ控制，双闭环控制）。(A more detailed description of the principle of a single coordinate system PLL synchronization and setting PI controller parameters. SPLL with a single synchronous coordinate system lock control structure, generally applicable to the detection phase, frequency and amplitude of the grid voltage at equilibrium, as well as for a variety of control structures (droop control, PQ control, dual loop control).)

activity coefficient calculator

matlab编写的小游戏，很像“闪电”，版本要求高于R(matlab prepare small games, like )

利用MATLAB制作合成音乐播放，可以作为GUI插入的背景音乐，歌曲为一闪一闪亮晶晶，供给初学者参考(Using MATLAB to make synthetic music playback, can be used as a GUI insert background music, songs to twinkle twinkle little star, to supply reference for beginners)

关于数独的解法程序。输入一个9×9的矩阵，空白处为0，运行此程序，进行计算(With regard to the solution of Sudoku program. Enter a 9 × 9 matrix, the space is 0, run this program, are calculated)

说明：  有关带限信道的数字传输matlab程序--码间干扰的特性，线性和非线性均衡器。(On the band-limited digital transmission channel matlab program- inter-symbol interference characteristics, linear and nonlinear equalizers.)

ctp海风实例 有修改 非常好的交易实例(ctp cthostftdctraderapi)