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正交频分复用其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。(Orthogonal Frequency Division Multiplexing)

说明：  MATLAB与C#VisualC++语言混合编程的实现(Realization of hybrid programming language of MATLAB and C# VisualC++)

fit_rayleigh_pdf - Non Linear Least Squares fit of the Rayleigh distribution. given the samples of the histogram of the samples, finds the distribution parameter that fits the histogram samples.fits data to the probability of the form: p(r)=r*exp(-r^2/(2*s))/s with parameter: s format:result = fit_rayleigh_pdf( x,y,W,hAx ) input: y - vector, samples of the histogram to be fitted x - vector, position of the samples of the histogram (i.e. y = f(x,a)) W - matrix or scalar, a square weighting matrix of the size NxN where N = length(y), or 0 to indicate no weighting is needed. hAx - handle of an axis, on which the fitted distribution is plotted output: result - structure with the fields s - fitted parameter VAR - variance of the estimation type- weighted LS or not weighted LS iter- number of iteration for the solution

双音频信号处理，模拟电话的各个按键的波形发生情况(Dual audio signal processing, waveform of each key of the occurrence of an analog telephone)

用MATLAB写的风扇调速程序，对于正在学习MATLAB的你应该有所帮助(Writing with MATLAB fan speed control program for MATLAB is the study you should be helpful)

比特加载技术相关算法，包含Fischer算法，贪婪算法以及chow算法。(bit loading algorithm, include Hughes-Hartogs Algorithm, Fischer Algorithm and chow algorithm)

使用matlab和dsptool工具做得fir滤波器(Using matlab and dsptool tools to do fir filter)

vincotech的NPC控制资料，Neutral Point Clamped Inverter，很详细的拓扑结构分析和测试波形(vincotech the NPC control information, Neutral Point Clamped Inverter, very detailed topology analysis and test waveforms)

this code to input 8 different data and make them out sequentialy

给出了隶属度函数求故障标准差和均值的程序，此程序能够很好的对故障识别做出曲线比较。(It could give standard deviation and mean and compare different faults though figure. )