shuangzhengjiao

Space–time block coding is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data-transfer. The fact that the transmitted signal must traverse a potentially difficult environment with scattering, reflection, refraction and so on and may then be further corrupted by thermal noise in the receiver means that some of the received copies of the data will be better than others. This redundancy results in a higher chance of being able to use one or more of the received copies to correctly decode the received signal. In fact, space–time coding combines all the copies of the received signal in an optimal way to extract as much information from each of them as possible.

1) 已知x=[1:15], y=[12 34 56 78 99 123 165 198 243 277 353 345 303 288 275], 用多项式进行拟合，给出拟合多项式，(所选拟合多项式阶数不同，拟合结果不同，请你选择适当的阶数进行拟合)，并绘出原始数据点、拟合曲线和95％置信区间（confidence bounds）的图形 . 2) 根据下面数学模型建立仿真模型，并在一个示波器中把它们的波形仿真出来。 (1) are known to x = [1:15], y = [12 34 56 78 99 123 165 198 243 277 353 345 303 288 275], with polynomial fitting, given the polynomial fitting, (the election order polynomial fitting different fitting results to differ, please select the appropriate order of fit), and draw original data points, fitting curve and 95 confidence interval (confidence bounds) graphics .2 ) In accordance with the following mathematical model for the establishment of simulation model, and in an oscilloscope waveform in their simulation out.)

Fourier Transforms Using Matlab 英文，清晰pdf版(Fourier Transforms Using Matlab in English, a clear pdf version)

image processing information about roi applying for deblurring

这是一个利用MATLAB中wdencmp函数对图像进行压缩的问题，程序简单易用。(This is a problem of image compression utilize the MATLAB, wdencmp function, easy-to-use program.)

kl变换，dct，dft变换以及信号压缩(kl transform, dct, dft transform and signal compression)

一个7段的显示器，及按一定顺序循环得到的结果，可重复使用(A 7-segment display, and by a certain sequence and cycle the results obtained can be reused)

Regression analysis using machine learning

an introduction to dynamic meterology chapter five matlab所有代码 气象专业经典资料(an introduction to dynamic meterology chapter five matlab code)

提出的蚱蜢优化算法（GOA）在数学上模拟和模拟蚂蚁群体在自然界中的行为以解决优化问题。(The proposed Grasshopper Optimisation Algorithm (GOA) mathematically models and mimics the behaviour of grasshopper swarms in nature for solving optimisation problems.)