chaokuaidaijichu

说明：  毕业设计时的ofdm的仿真程序，做的还算可以，顺利毕业了。(graduation OFDM design of the simulation program, can be done fairly smoothly graduated.)

Program for ofdm and its BER performance

Matlab code about basic filters, upsampling and downsampling. I hope you will enjoy the codes.

Comparison of two survival curves can be done using a statistical hypothesis test called the log rank test. It is used to test the null hypothesis that there is no difference between the population survival curves (i.e. the probability of an event occurring at any time point is the same for each population).

读取气象雷达基数据（SA），能够实现产品显示和二次处理(Read the meteorology of Base data (SA), to be able to display and secondary treatment)

实现MATLAB不同GUI之间的数据传递，值得一看(MATLAB data transfer between different GUI, worth a visit)

基本粒子群算法源程序，开发环境是MATLAB，吐血推荐，易改实用！(Particle swarm algorithm source)

matlab hann hamming window FFT DFT DTFT

当信噪比低，小信号输入时噪音严重，在整个音域的声音明显变得浑浊不清，不知发的是什么音，严重影响音质。信噪比的大小是用有用信号功率（或电压）和噪声功率（或电压）比值的对数来表示的。(When the signal to noise ratio is low, serious small signal input noise, the sound of the entire range becomes significantly turbid, I do not know what made the sound, seriously affecting the sound quality. Size is the number of the signal to noise ratio by the ratio of desired signal power (or voltage) and the noise power (or voltage) represented.)

用MATLAB写的 最优化设计课程里的 二阶段法(MATLAB was used to optimize the design curriculum of the second stage)