LABEX4

说明：  用C语言写的在matlab中编译好的时频分析工具箱，大大提高了m语言运行的效率。(Written by C language compiled in matlab time frequency analysis in the toolbox, greatly improving the efficiency of m language runtime.)

This is matlab simulation of selective mapping technique for papr reduction.Sequences that are independent and represent the same information are generated.PAPR of these are calculated separately. Sequence with the smallest PAPR is selected for final serial transmission

xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算相对相位差。(xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference.)

数学方法是部分子空间法，是机器学习的例程，时间序列数据分析中的梅林变换工具，验证可用，到达过程是的泊松过程，信号维数的估计，music高阶谱分析算法，旋转机械二维全息谱计算。( Mathematics is part of the subspace, Machine learning routines, Time series data analysis Mellin transform tool, Verification is available, Arrival process is a Poisson process, Signal dimension estimates, music higher order spectral analysis algorithm, Rotating machinery 2-d holographic spectrum calculation.)

说明：  神经网络激活函数代码，有代码有图，可以直接用来学习使用。(Neural network activation function code, there are codes and graphs, can be directly used to learn to use.)

matlab用来解一般线性或者非线性方程的方法及标准应用公式。(matlab used to solve a general linear or nonlinear equations and application of formulas.)

This file contains different algorithms of control in simulink matlab.

说明：  天线程序 matlab编写 水平极化方式 方向图 (antenna)

FFT的Matlab仿真分析,北京理工大学雷达技术研究所。(FFT of Matlab simulation, Beijing Institute of Technology Institute of radar technology.)

calculate the power spectral density of EEG file