ErrorDiff

数字通信原理基于matlab仿真计算，采用matlab语言仿真通信原理基础内容：包括随机信号、调制解调、信源信道编码和滤波器等相关通信系统的仿真实现，建议具有matlab使用能力的人使用，对于加深自己对通信原理理论知识的理解很有帮助(Digital Communications Principles Matlab-Based Simulation Approach)

说明：  QAM 的MATLAB仿真，可以根据自己的需要拆开使用，仿真测试通过(QAM of the MATLAB simulation, can be used according to their needs apart, the simulation test by)

pv cell modeling SIMULINK PV + BUCK CONVERTER

两块无线大的PEC板位于YOZ平面，一块位于x=0电位为0V，另一块位于x=4电位为20V，使用一维有限元方法求解板间电位。 (Two wireless PEC board located YOZ to plane, one at x = 0 potential is 0V, and the other one is located in x = 4 the potential of 20V, the one-dimensional finite element method for solving the potential between the plates. )

一个GUI做的日历，非常漂亮，也很基础，学习GUI的不错程序。(A GUI calendar, very beautiful, is also the basis of a good program to learn the GUI.)

vcalssification algorithm8

介质共形FDTD技术，可以很好地计算圆柱介质的谐振频率，也可以计算谐振腔中含有介质球的谐振频率(Dielectric conformal FDTD technique can be a good medium to calculate the resonant frequency of the cylinder can also calculate the resonant frequency of the resonant cavity containing a dielectric sphere)

MUSIC算法是一种基于矩阵特征空间分解的方法。从几何角度讲，信号处理的观测空间可以分解为信号子空间和噪声子空间，显然这两个空间是正交的。信号子空间由阵列接收到的数据协方差矩阵中与信号对应的特征向量组成，噪声子空间则由协方差矩阵中所有最小特征值（噪声方差）对应的特征向量组成。MUSIC算法就是利用这两个互补空间之间的正交特性来估计空间信号的方位。噪声子空间的所有向量被用来构造谱，所有空间方位谱中的峰值位置对应信号的来波方位。MUSIC算法大大提高了测向分辨率，同时适应于任意形状的天线阵列，但是原型MUSIC算法要求来波信号是不相干的。(MUSIC algorithm is a matrix decomposition method based on feature space. From the geometric point of view, the observed spatial signal processing can be decomposed into signal subspace and noise subspace, it is clear that the two spaces are orthogonal. The signal received by the array to the subspace of the covariance matrix of the signal component corresponding eigenvectors, the noise subspace of the covariance matrix of all by the smallest eigenvalue (noise variance) eigenvectors corresponding to the composition. MUSIC algorithm is the use of orthogonal properties between these two complementary space to estimate the spatial orientation of the signal. Noise subspace of all vectors are used to construct the spectrum, all the spatial orientation of the spectrum corresponding to the peak position of the signal wave direction. MUSIC algorithm greatly improves the resolution measurements, while the antenna array adapted to any shape, but the prototype MUSIC algorithm requires to wave sign)

Image histogram equalization

香农编码,费诺编码,哈夫曼编码通用程序及它们的码字长度,平均码长,各自的编码效率计算.(Shannon coding, fee Connaught coding, Huffman coding common procedures and their code length, the average code length, the coding efficiency of their calculation.)