GHM

matlab code for Blackman Window....

自己编写的QPSK调制与解调，内含matlab-figure-file、matlab-M-file和得出的jpg格式图形！(I have written QPSK modulation and demodulation, containing matlab-figure-file, matlab-M-file and come to the jpg format graphics!)

说明：  图像分割与特征提取，matlab开发环境( The picture division and the characteristic withdraw, matlab development environment )

this code is for array factor

This file is the programs of (chapter 4) of book (Modeling the Wireless Propagation Channel a Simulation Approach with MATLAB) which is related to introduction to multipath. It helps you to simulate multipath wireless channel.

matlab基于ActiveX技术实现对PPT的自动生成程序，这是按照已定型的模板写的，包含图片、文本、表格、图形等基本的PPT元素的自动生成与属性设置。(matlab based on ActiveX technology to automatically generate the PPT program, which is written in accordance with the template has been finalized, including images, automatically generate and property of the text, tables, graphics and other basic elements of PPT.)

neural network mode for time series,which can process data adaptively

实现lle和pca的matlab编程，主要目的是比较lle和pca这两个高维数据降维方法的性能，各有所长。(Use matlab to realise lle and pca ，the purpose is to compare lle and pca，which reduce high dimension data to low data dimension，and each has advantage！)

利用龙格-库塔法求解了航天器深空返回再入运动动力学方程，并对返回再入运动进行了仿真分析。(Use of Runge- Kutta method to solve the deep-space spacecraft reentry return movement dynamics equations, and the return movement is simulated reentry.)

用一阶梯度法，共轭梯度法和变尺度法求解多变量的寻优问题，其中单变量的寻优用的是0。618法(One method used ladder, conjugate gradient method and the variable metric method for solving multi-variable optimization problems, single-variable optimization using the 0.618 Act)