QPSK_Demodulation_system_simulation_lab

总体经验模态分解（EEMD）的程序，适合初学者学习。(Overall empirical mode decomposition (EEMD) procedures, suitable for beginners to learn.)

本人收集的几个版本emd程序，包括emd2002,emd2005,emd2007三个版本，希望对研究emd的有些帮助(I collected several versions EMD procedures, including emd2002, emd2005, emd2007 three versions, and they hope to study some of EMD help)

这是MAtlab与DSP应用中的第3掌的例子程序(This is the Matlab and DSP applications, the first example of the procedure in charge of 3)

说明：  一个随机数产生器(mt19937) 计算物理中Monte Carlo方法中的基本条件 周期为2^19937(a random number generator (mt19937) Computational Physics Monte Carlo methods of the basic conditions for the cycle 2 ^ 19937)

说明：  这些文章讲述了分步傅里叶方法，通过这些方法可以数值解非线性薛定谔方程，并且模拟光在光纤中传输随距离变化的状态，是学习光传输比较好的资料(The article was about a split-step Fourier method, numerical solution of these methods can be non-linear Schrodinger equation, and simulation of optical fiber transmission in the state of change with distance, is to learn good information on optical transmission)

计算尺寸因子对消光效率和散射效率，吸收效率，后向散射效率等的影响 (Size factors calculating the efficiency of extinction and scattering efficiency, absorption efficiency, backscattering efficiency of)

matlab6.0的教材，有较详细的各种数学方法的matlab计算，例子可供参考！(matlab6.0 materials, there are more detailed methods matlab mathematical calculation, for example, for reference!)

频谱选取，一般用于后续向量机的诊断的特征。进行了频谱分析后对每个频带的能量进行分离开。(Spectral selection, generally for subsequent diagnostic feature vector machine. Spectrum analysis conducted after the energy of each frequency band to leave.)

合作检测算法，各种传统判决规则，基于能量检测算法(coorporated detection)

Univercity of Bristol几个学生用6DOF（也即是GY-521三轴加速度+三轴陀螺）制作的测步器，可以看到他们成功测量出各轴旋转以及xyz轴的位移(Univercity of Bristol several students 6DOF (that is, GY-521 triaxial accelerometer+ triaxial gyro) produced measured steps, you can see their success measurement of the displacement of each axis and xyz axis)