fft_emd

说明：  直接的源代码形式,没有解压密码,即解即用,也可能有点语法问题,请使用的时候注意一下(direct source code form, without extracting passwords, that solution is used, may be a bit syntax, please use the time to take note)

时间序列数据是指按照时间先后依次排列的观测值所构成的数列，如各年度的国内生产总值、人口数据等。研究时间序列数据模型处理的主要目的是进行数据预测，如预测下一年度的销售额、预测股票价格的走势等(Time series data is the number of columns in accordance with the chronological order of priority observations posed, such as gross domestic product each year, the population data. The main purpose of study time series data model for data processing is forecast sales next year as forecast, predict stock price movements, etc.)

复合材料层合板极限应力计算(matlab) 这是我课后作业(Composite Laminates ultimate stress calculation matlab)

通信系统设计，数字带通传输系统仿真Matlab代码 1. 比较BPSK与QPSK两种调制方式的误码率和误比特率性能（注意QPSK的误码率不同于误比特率），横坐标为SNR，并与理论曲线比较，分析解释仿真图。 2. 要求使用Matlab/C语言/Matlab-simulink中的任一种工具实现。 3. 代码中每个模块都要有详细注释说明。 (Communications systems design, digital bandpass transmission system simulation Matlab code 1. Comparison of BER QPSK and BPSK modulation methods and bit error rate performance (note QPSK error rate is different bit error rate), the horizontal axis is SNR, and compared with the theoretical curve, analysis and interpretation of simulation map. 2. requires the use of Matlab/C language/Matlab-simulink any one tool to achieve. 3. The code of each module must have a detailed explanatory notes.)

基本的贝叶斯算法（朴素贝叶斯算法，参照清华大学出版的模式识别）(The basic Bayesian algorithm (Naive Bayes algorithm, in the light of pattern recognition, Tsinghua University Publishing))

附件包括了运用mimo技术实现的ofdm系统，其中包括信道的创建，调制解调技术，还有相关指导文档(Accessories include using mimo ofdm systems technology implementation, including the creation of the channel, modulation and demodulation techniques, as well as the relevant guidance documents)

各种形式的方向图，波束形成中有常规波速形成，等等(Various forms of pattern, with a conventional beamforming beamforming, etc.)

一个是产生语音的波形和短时频谱，另一个是产生语谱图。(One is to generate voice waveforms, and short-term spectrum, and the other is to generate spectrogram.)

matlab最优化问题整理，对matlab常用的一些最优化函数做了介绍(matlab optimization problem finishing, some of the most commonly used on the matlab optimization function, made an introductory)

说明：  用matlab的simulink做的对选择式分集进行的测试 及性能验证。(Using matlab to do the simulink of Selective sub-set of testing and performance validation.)