multi_level_inverter

matlab教学从入门到精通 是初学者必备(matlab teaching beginners from entry to the master is essential)

OFDM系统的MTLAB程序仿真，对于刚入门学OFDM的新手来说很有帮助(OFDM system MTLAB process simulation, for the novice just started learning it was helpful for OFDM)

典型的遗传算法，保证能够运行，切没有密码(The typical genetic algorithm)

说明：  决策树分类程序，包含使用的数据集和运行结果(Decision tree classifier, including data sets used and running results)

用于数学建模，评价类模型，层次分析法的代码(For mathematical modeling, evaluation class model, AHP code)

fir: Transform lowpass filters to highpass

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

实现matlab和VC的混合编程，对回转窑数据进行线性拟合，绘制窑体温度曲线，自动寻找，煅烧带位置！(Achieve matlab and VC mixed programming, the linear fit to the data kiln, kiln temperature curve plotted automatically find, calcined with position!)

This is a program to illustrate the interference cancellation in cognitive radio

AWGN + Nakagami + BPSK