qpsk

Matlab_show the FFT and their related

This functions handles callbacks from the enter_distributions GUI

说明：   可以参考，对做通信课题设计的人来说，看了很有益处(can refer to the communication issue so those who design and useful read)

在matlab环境下利用有限元分析方法，采用四面体单元计算单向拉伸杆的横截面应力(In the matlab environment using finite element analysis, calculated using one-way stretch rod tetrahedral unit cross-sectional stress)

from matlab.the file describe the finite element method

振动理论中用四阶龙格库塔法解决受阶跃式激励的单自由度问题(Vibration theory with fourth-order Runge-Kutta method to solve by the step-like incentive problem SDOF)

永磁同步电动机的仿真程序和说明，对于三相永磁同步电机性 能研究有重要作用(Permanent magnet synchronous motor simulation program and instructions for three-phase permanent magnet synchronous motor performance)

第四颗卫星C/A码的产生代码，matlab编写(the generation of C/A code)

数值分析matlab代码，Gauss迭代，Jacobi迭代，SOR迭代，Newton迭代，符合Simpson，最佳平方逼近等(Numerical Analysis Code of Gauss-Seidel,Jacobi,SOR,Newton,Simpson)

IRBLEIGS: Finds a few eigenvalues and eigenvectors of a Hermitian matrix. IRBLEIGS will find a few eigenvalues and eigenvectors for either the standard eigenvalue problem A*x = lambda*x or the generalized eigenvalue problem A*x = lambda*M*x, where A is a sparse Hermitian matrix and the matrix M is positive definite.