fourier_transfer

Systemview是重要的通信系统仿真软件，国外用的很多。这是我做硕士阶段仿真的一些源代码，对通信系统设计开发非常有用，由于没有Systemview这个板块，所以放在这里。这是一个信号平方仿真的Systemview源代码。(Systemview is an important communication system simulation software used in many foreign countries. This is what I do Simulation Master stage some source code, the communication system design and development is very useful. Because no Systemview the plate, so on here. This is a signal of Systemview square simulation source code.)

GM(1,1)灰色预测,作为例子，可以很好地掌握灰色预测最基本的东西，希望对大家有用(GM (1,1) gray prediction, as an example, can be a good grasp of the most basic things gray forecast, we hope to be useful)

利用matlab编写的扩频通信中涉及到的kasami小集序列，并验证其性质(Spread Spectrum Communication kasami sequence)

跳频通信过程仿真。包括调解，扩频，接扩，解调全过程。(Simulation of frequency hopping communications. Including mediation, spread spectrum, and then expand, the whole process of demodulation.)

通过介绍判断分析的相关内容，提供了相关的算法，很好，很全面(By introducing the judgments of the relevant content, providing the relevant algorithm, very good, very comprehensive)

混频信号通过低通滤波器后的信号的频谱图,matlab程序 有注释(Mixed signal through the low pass filter of the signal spectrum.)

说明：  matlab 版本的DTOA 多站时差定位技术计算GDOP(matlab DTOA GDOP Location)

用Matlab编程，实现解决该问题的单样本训练BP网络，设置一个停止迭代的误差Emin和最大迭代次数。在调试过程中，通过不断调整隐层节点数，学习率η，找到收敛速度快且误差小的一组参数。产生均匀分布在区间[-4，4]的测试样本，输入建立的模型得到输出，与Hermit多项式的期望输出进行比较计算总误差（运行5次，取平均值）(Using Matlab programming, to solve the problem of single sample training BP network, set a stop error iterations Emin and the maximum number of iterations. In the debugging process, by continuously adjusting the hidden layer nodes, learning rate η, fast convergence and find a set of parameters small errors. Produce a uniform distribution in the interval [4,4] of the test sample, the model has been established input output with the expected output Hermit polynomial calculated by comparing the total error (run 5 times the average))

matlab PID 刘金琨《智能控制的MATLAB实现》(matlab PID)

含风机和statcom补偿的小型输电系统，可以模拟风力波动、母线故障、风电投切造成的电能质量问题，并通过statcom补偿稳定母线电压并滤除谐波，效果较好，与大家分享。(The small power transmission system with fan and statcom compensation can simulate the power quality problems caused by wind power fluctuation, bus fault and wind power switching, and stabilize the bus voltage by statcom and filter out the harmonics, and it is better to share with you.)