constellation_qam

一本很经典的的关于概率统计的数学书，涵盖了各种经典的统计模型，值得好好学习。(One of the classic book on mathematical probability and statistics, covering a variety of classical statistical models, it is worth to learn.)

matlab，实现永磁同步电机调速。pid控制(matlab，pmsm，PID controller)

关于Matlab的最优化相关问题的分析以及编程实现描述，具有相当指导价值(Matlab' s optimization on issues related to analysis and description of programming, with considerable guidance value)

ProTK installation example

butt,cheb1,cheb2,elip四种常见的IIR滤波器使用小例子(butt, cheb1, cheb2, elip four common small example of the use of IIR filters)

基于Matlab对约瑟夫森结（Josephson Junction）RCSJ模型的交直流I-V特性及非线性混沌现象进行数值模拟。通过计算机数值模拟得到该模型的非线性微分方程数值解，研究了RCSJ模型中各参量对约瑟夫森结的影响，进而简要分析其I-V特性和非线性混沌现象的产生机理，绘制出约瑟夫森结的交直流I-V特性曲线、非线性微分方程的相图及因其高度非线性而引起的通过倍周期分岔和阵发性原理进入混沌状态的分岔图。还给出庞加莱截面及功率谱。(Matlab based on the Josephson junction (Josephson Junction) RCSJ model AC and DC IV characteristics and non-linear numerical simulation of chaotic phenomena. Through computer simulation model by the numerical solution of nonlinear differential equations to study the RCSJ model parameters on the impact of Josephson junction, and a brief analysis of the IV characteristics and the emergence of the phenomenon of non-linear chaotic mechanism, drawn Josephson junction IV characteristic curve of AC-DC, non-linear differential equations and the phase diagram because of its highly nonlinear arising through period-doubling bifurcation and chaotic state of paroxysmal principle of access to the bifurcation diagram. Poincare cross-section and was also given power spectrum.)

说明：  实现QPSK的仿真，画出误码率和信噪比的曲线(QPSK simulation to achieve, draw the curve of error rate and SNR)

电力系统建模，非常适合于初学者及专业人士参考学习(Power system modeling, very suitable for beginners and professionals refer to learning)

Corner is important feature points in the image corners with processing information, the amount of data is relatively small, but the large amount of information. Corner has not clearly defined, research and analysis of diagonal point algorithm and comparison is necessary

optisystem13相干通信的例子，非常实用，已经验证过！(Optisystem13 coherent communication examples, very practical, has been verified!)