approx_entropy_my

bunching simulink in matlam for fuzzy systems

Matlab 降噪程序，使用LMS算法去除噪声，在一段添加噪音的音频文件中滤除噪声！(Matlab Noise reduction LMS)

数字频带通信系统 输入：首先输入模拟信号，给出此模拟信号的时域波形。 数字化：将模拟信号进行数字化，得到数字信号，可以选择PCM编码。 调制：可以选择简单的二进制数字调制方式。例如振幅键控(2ASK)、相移监控（2PSK）、频移键控（2FSK）、差分相移键控（DPSK）等。要求每个题目至少选择两种调制方式。有能力的同学也可以选择其它高效的调制方式?例如多进制数字振幅键控等?给出调制后信号的时域波形。 信道：假定信道属于加性高斯信道?或自行设计。 解调：相应的2ASK、2PSK、2FSK、DPSK解调，仿真获得解调输出波形。 PCM解码：给出解码后的模拟信号的时域波形，并与输入信号进行比较。 系统性能分析：比较在不同调制方式下，该数字频带传输系统的性能指标，即该系统的输出误码率随输入信噪比的变化曲线。(Digital frequency band communication system)

利用Matlab提取图片中的数据 从事科研或者工程的人员在文档撰写过程中，常需要将文献中的曲线与自己的结果对比，为获取原始数据，一种常用的办法是手动描点，即将原始曲线放大然后打印出来，选取一定数量的点，读出其横纵坐标，然后重绘。对于较为平坦的曲线，这种方法当然可行，但当曲线数量增加，曲线变化复杂，这种方法工作量可想而知。前段时间由于原始数据丢失，仅剩几十幅图片，本人尝试过手动描点，经历几个小时奋战，实在无法继续，索性转向matlab，借助其强大的数据处理能力，编写了两个GUI的小软件image2data、data_poly提取数据，如今大功告成，遂于大家分享。(Using Matlab to extract picture data in scientific research or engineering personnel in the process of writing documentation, often need to curve in the literature comparing the results to obtain the original data, a common approach is described in the manual, is about the original amplification curve and then print it out, select a certain number of points, read out its horizontal and vertical coordinates, and then redraw. For a flatter curve, this approach is of course possible, but when the increase in the number of curves, the complexity of the curve, this method can imagine the workload. Some time ago due to the loss of original data, except for the dozens of pictures, I tried manually tracing point, after several hours of fighting, I can not continue to simply turn to Matlab, with its powerful data processing capabilities, the preparation of two GUI software image2data, data_poly extract data, and now you' re done, then share with you.)

矩阵变换器的模型预测控制，运行时先运行M文件，再运行仿真模型。(Matrix converter model predictive control, run the first run M file, and then run the simulation model.)

A very simple exaple of application of Neural Hopfield mathod.

本程序设计的是咬尾编码的turbo码，用matlab编写。咬尾turbo码也即不需要拖尾比特，使得前后两个状态相同，译码采用修正的MAP译码算法,此为咬尾turbo编码算法(This program is designed to encode the turbo tail biting code, written with matlab. Tail biting turbo code that is not trailing bits to make the same before and after the two states, the MAP decoding using modified decoding algorithm, this is the tail biting turbo coding algorithm)

阵列信号对于天线阵设定的频率有偏差的情况下的方向图效果 (Array signal to the antenna array to set the frequency deviation case pattern effect)

LMS+and+VSS_LMS算法，可在MATLAB7.0 以上的版本应用。(LMS and VSS_LMS CODE with MATLAB. The file include five sub_files.)

Tutorial to H2 and H-infnity control