exfun

simulink 2d 查表程序 table2d.m, data2d.fig, table2dlookup.mdl, data2dresult.fig(simulink 2d look-up table procedure table2d.m, data2d.fig, table2dlookup.mdl, data2dresult.fig)

在纯数学方法难以求解一个函数的值域时，用遗传算法计算函数的最大值(Pure mathematics is difficult to solve the range of a function, using genetic algorithms to calculate the maximum value of the function)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

A Matlab toolbox for exact linear time-invariant system identification is presented. The emphasis is on the variety of possible ways to implement the mappings from data to parameters of the data generating system. The considered system representations are input/state/output, difference equation, and left matrix fraction. KEYWORDS: subspace identification, deterministic subspace identification, balanced model reduction, approximate system identification, MPUM.

基于QR分解的波束成形，掐你条件是已知信道完全信息，然后对信道状态H进行分解，求出波束赋形矩阵(Beam forming based on QR decomposition, pinch your condition is known channel completely, and then decompose the channel state H, and calculate beamforming matrix)

专门针对matlab中作图方法和GUI的电子书，从基础讲起，适合零基础的初学者。(Specifically for mapping methods and GUI matlab in e-books, basic talk, for zero-based beginners.)

按转子磁链定向的矢量控制系统matlab仿真；(Press the rotor flux oriented vector control system matlab simulation )

说明：  6QAM通过带限信道，设码元速率为1000波特，传输信道特性为滚降系数为0.75的滚升余弦频谱的滤波器，试建立测试模型并观察接收信号（等效基带信号）的眼图、星座图和相位转移轨迹图。simulink模型(6QAM through the band-limited channel, located at 1000 baud symbol rate, the transmission channel characteristics for the roll-off factor of 0.75 of spectrum raised cosine filter roll and try to create a test model and observe the received signal (the equivalent baseband signal) of the eye diagram, constellation and phase transfer trajectories. simulink model)

这是一些关于matlab基础的教程 初学者可迅速掌握上手(Matlab based tutorial for beginners to master to get started quickly)

Good Documents. Links are given