the_finite_element_method_using_matlab

基于差分进化的粒子群优化算法，（全局最优粒子群优化算法）(Based on differential evolution particle swarm optimization, (global optimization PSO))

"李人厚：精通MATLAB--综合辅导与指南"经典收藏 ("Li Hou : proficient in MATLAB-- comprehensive counseling and guidance" classic collection)

计算非线性光纤中的主导方程，非线性薛定谔方程的数值代码。(This is a code to solve the nonlineared Schrodinger equation numerically, which is the govenning equation in a nonlieared optical fiber.)

一个简单的s-function的范例，足够多的说明可以将其作为其他s-function的模板(A simple example of s-function, and a sufficient number of instructions can be used as template for other s-function)

This section of MATLAB source code covers 802.16e ITU-T pedestrian and vehicular Channel models.

MATLAB通信原理ook调制源代码文件(Communication Theory ook modulation MATLAB source code files)

说明：  matlab例程源码，有很好的参考价值(matlab routines source, has a very good reference value)

QPSK信号通过Rayleigh信道，并计算出误码率(QPSK signals go through Rayleigh channel)

1、用Matlab绘制带通信号图形 2、用Matlab对模拟信源进行均匀量化 3、用Matlab编制一个函数实现均匀PCM量化编码，并计算量化噪声比(SQNR) 4、用Matlab对不同的量化级数计算出相应的量化噪声比(1, drawn using Matlab graphics bandpass 2, the simulation using Matlab source for uniform quantization 3, prepared using Matlab function to achieve a uniform PCM quantization coding, and calculate the quantization noise ratio (SQNR) 4, using Matlab on a different series to calculate the corresponding quantitative quantization noise ratio)

说明：  无刷直流电机调速系统，采用双闭环电流斩波控制(Brushless DC motor speed control system with double closed loop current chopper control)