qpsk_raise_cosine1

先定义蔡氏方程，再利用ode45画出蔡氏方程的分岔图(we give the equation of chua,then use ode45 function to solve and plot the bifurcation diagram.)

AN IMPORTANT class of theoretical and practical problems in communication and control is of a statistical nature.

有源电力滤波器，采用滞环控制方法以，直流侧电压为530V，最终波形显示很好 (Active power filter, a control method with hysteresis, DC voltage is 530V, the resulting waveform display good)

使用模拟退火算法（SA）解决TSP问题的Matlab代码(use SA for solving TSP problem)

对回转支承信号的处理，对时域内特征值得提取和主成分分析，计算第一主成分(For slewing ring signal processing, time domain feature extraction and principal component analysis is worth calculating the first principal component)

用matlab编程求解无约束优化问题、线性规划问题即在一组线性不等式或等式组的约束条件下求某个线性函数的最值问题(Matlab programming for solving unconstrained optimization problems, linear programming problems that most value problem for a linear function under the constraints of a set of linear inequalities or equations group)

说明：  无线中继协作下的AF、DF性能传输分析，信道采用的瑞利信道。(AF and DF performance transmission analysis under the wireless relay cooperation, Rayleigh channel adopted by the channel.)

传统的从动轮式减振器在柴油机5挡时的减振效果模拟建模(The traditional shock absorber in the diesel engine driven wheel 5, when the damping effect of block simulation modeling)

测试文本，选用著名的gettysburg这篇英文文本做为测试文本(Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. In the end, the cosine similarity of texts is used to measure the similarity between the query and documents.)

模拟多小球弹性碰撞,很有趣的一个程序，跟物理有关，不妨看看~(Simulation of multi-ball elastic collision，let us learn it together.)