various_channel_and_modulation_of_simulink

对音频的前200个点做8bit量化，使用3三种量化方法，可以进行对比(Former 200-point audio quantization do 8bit)

说明：  输入特征向量训练随机森林分类模型，并计算分类结果的Kappa系数，混淆矩阵，准确性，特异性和敏感性。(Input eigenvector to train random forest classification model, and calculate kappa coefficient, confusion matrix, accuracy, specificity and sensitivity of classification results.)

code for object extraction using matlab

不错的一篇柴油机的自适应模型,希望对读者有一定帮助。(It is a great adpative diesel model.)

matlab仿真出圆孔的夫琅禾费衍射，其中有四副图，原图，二维衍射图样，函数图象和三维衍射图样(matlab simulation of a hole in the Fraunhofer diffraction, which has four maps, original, two-dimensional diffraction patterns, functions, images and three-dimensional diffraction pattern)

UAV zagi parameters for simulation

神经元mass模型tonic 放电例子，并给出了相图(a example of neural mass model in tonic firing, and give its phase portrait)

利用MATLAB语言计算标准卡尔曼滤波算法(Calculated using MATLAB language standard Kalman filter algorithm)

CDMA业务信道卷积编码实现，根据上下行信道区分生成不同码率的卷积码序列，original_sequence是原始输入序列，channel_select是信道选择参数，其中下行码率为1/2，上行信道为1/3 (CDMA business channel convolutional coding to achieve, according to the distinction between upper and lower line to generate a different channel bit rate of the convolutional code sequence, original_sequence is the original input sequence, channel_select is channel selection parameters, which downlink bit rate of 1/2, upstream channel for the 1/3)

一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 ( a OFDM symbol 128 effective symbols, insert 128 virtual sub-carrier symbol rate (i.e. valid data rate), and fsymbol sending rate (need to include virtual sub-carrier) 2fsymbol input data need 2 times the sending data rate for interpolation, realize a timing tracking, namely fsymbol sampling rates four times the modulation signal OFDM symbol Nfft = 128 points a OFDM symbol of data points Nfft* 2 = 256, Guard Interval point = Ng* 2 = 64 )