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这一段源代码为瑞利衰落信道的实现，代码比较简单，适合初学者学习(This section of the source code for the realization of Rayleigh fading channel, the code is relatively simple, suitable for beginners to learn)

说明：  创建一个复数类，定义属性：实部、虚部。定义方法：复数加法、复数减法、复数乘法、求实部，求虚部，将复数输出，判断两个复数相等。通过一个类举例验证这些方法(Create a complex number class, custom attributes: the real part, imaginary part. Definition method: complex addition, complex subtraction, multiplication, complex, realistic Department, seeking the imaginary part, the complex output, determine the two complex numbers are equal. Verified through a class example of these methods)

SIFT特征（Scale-invariant feature transform，尺度不变特征转换)是一种电脑视觉的算法用来侦测与描述影像中的局部性特征，它在空间尺度中寻找极值点，并提取出其位置、尺度、旋转不变量(SIFT features (Scale-invariant feature transform, scale-invariant feature transform) is a computer vision algorithm to detect and describe the image characteristics of the locality, it scales in space to find extreme points, and extract its location , scale, rotation invariant)

VArious basic programme according to the book Basics of Matlab (Zakova)

blind image data using RDWT SVD algorithm.watermarking using a wavelet algorithm and a compression (SVD) algorithm....

electrical engineering

空间电压矢量脉宽调制技术 SVPWM：利用MATLAB/SIMULINK 平台，搭建交流感应电机矢量控制系统的仿真模型，仿真试验表明，该矢量控制系统控制性能良好。(Space vector voltage pulse width modulation SVPWM: Using MATLAB/SIMULINK platform, the simulation model of AC induction motor vector control system is built. Simulation results show that the vector control system has good control performance.)

Bandpass filter simulation analog communication

先进PID控制matlab仿真源代码，典型实例具体分析说明，通俗易懂。（第四章）(Advanced PID control matlab simulation source code, more typical examples of specific instructions, clear and easy to understand.（Chapter 4）)

说明：  含有通常所需的自适应滤波的AR预测过程模型，能够顺利的运行！(this file has the adaptive filter matlab source code ,you can run it smoothly)