simplecharrec(III)-update

通信原理matlab仿真中正交频分复用数字通信系统(Matlab simulation of communication theory orthogonal frequency division multiplexed digital communication system)

Ritz法解决-u +u=x 0<x<1，u(0)=0,u(1)=0的有限元边值问题。精确解为u(x)=1/(exp(1)-1/exp(1))*exp(-x)+1/(1/exp(1)-exp(1))*exp(x)+x，基函数为g(i)=sin(i*pi*x)(This matlab code is used to solve the boundary value problem of the differential equation: -u +u=x 0<x<1，u(0)=0,u(1)=0, where the accurate solution is : u(x)=1/(exp(1)-1/exp(1))*exp(-x)+1/(1/exp(1)-exp(1))*exp(x)+x)

code for carlike vehicle

说明：  matlab pendulum simulink example

通过使用matlab优化工具箱中的函数fmincon解决有约束的非线性优化问题，有详细的代码过程。(By using the matlab optimization toolbox function fmincon to solve constrained nonlinear optimization problem, has detailed the process code.)

基于MATLAB软件的有关雷达杂波的的很多个程序，相信对初学入门者很有帮助 (Based on MATLAB software on the radar clutter of many programs, I believe that is helpful for beginners beginners)

过程相关性检验，模型+脚本。matlab(correlation test, model+ scripts. matlab)

高阶谱分析，很实用，能帮助分析非平稳信号(Higher order spectral analysis, it is useful to help analyze non-stationary signals)

关于BPSK，QPSK，8QAM,16QAM，32QAM的调制解调程序。可作为单独模块加入到任何信道下，解调采用了两种方法。(On the BPSK, QPSK, 8QAM, 16QAM, 32QAM modulation demodulation process. As a separate module can be added to any channel, the demodulator uses two methods.)

《Digital and Analog Communications Systems》（《数字和模拟通信系统》）的配套MATLAB源代码，该书对数字和模拟通信系统都有讲述，偏重于数字通信系统。("Digital and Analog Communications Syste ms "(" digital and analog communications system ") supporting MATLAB source code, The book on digital and analog communications systems have talked about emphasis on digital communications systems.)