myfft

this code for test fft method

说明：  本设计是基于Matlab集成环境下用M文件编制程序来实现PSK信号的解调(The design is based on the Matlab environment integrated with M documentation procedures to achieve PSK signal demodulation)

L-BFGS-B is a variant of the well-known "BFGS" quasi-Newton method. This variant uses limited-memory (like L-BFGS), and also handles simple constraints (to be specific, bound constraints, so this includes x >=0 constraints).

QPSK通信系统仿真，有所有的代码，课程设计或者实验可以参考(QPSK communication system simulation, there is all the code, curriculum design or experiment can refer)

LDPC编译码算法，主要研究编码效率、帧长与吞吐量的三维关系。文件ldpcBER.m为运行文件，其他文件为函数文件。(LDPC encoding and decoding algorithms, the main research coding efficiency, frame size and throughput 3D. The file ldpcBER.m run the file, other files as a function of the file.)

说明：  a game

kalman 滤波器实现，IE算法思想，有源码，有PPT，有文章(realize kalmman filter ,IE program)

利用三电平中心削波自相关法实现清、浊音判定，并提取一段话音的基频参数，绘制基频曲线，并将该参数曲线合并到前面提取的短时过零率和短时能量参数曲线图中(Using a three-level center clipping from the relevant law to achieve clear, voiced determination, and extract some of the fundamental parameters of the voice, drawing the fundamental frequency curve and merge the parametric curve to the front of the extraction rate and the short-term zero short-term energy parameters graph)

fitting an elips using matalb

这个程序是关于数字图像处理里面的测量物体周长，还有中心，最后是画出物体的最小外接矩形。(This program is about digital image processing measurement of body inside the perimeter, there are centers, and finally draw the object' s minimum bounding rectangle.)