MATLAB

3 level NPC inverter (SPWM)

In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet.

code for AES to to encrypt data

用于多用户检测算法。可用于MIMO或CDMA系统中(MULTIUSER DECTECTION ALGORITHM,)

超声在多层复合结构中传播的stoneley波的相关程序(Ultrasound propagation in multi-layer composite structure of stoneley waves associated procedures)

这个matlab程序实现了Edge Linking and Line Segment Fitting，解压后直接运行demo.m就可以了 ( edgelink.m edge linking function that forms lists of connected edge points from a binary edge image. (Needs findendsjunctions and cleanedgelist below). drawedgelist.m plots out a set of edge lists generated by edgelink or lineseg. edgelist2image.m transfers edgelist data back into a 2D image array. lineseg.m forms straight line segments fitted with a specified tolerance to the lists of connected edge points. maxlinedev.m is also used by lineseg.m to calculate deviations of the edge lists from the fitted segments. findendsjunctions.m finds line junctions and endings in a line/edge image. cleanedgelist.m cleans up a set of edge lists generated by edgelink or lineseg so that isolated edges and spurs that are shorter than a minimum length are removed.)

锁相环模型，可以用于很多种控制中，应用很普遍(PLL model, can be used for very many kinds of control, the application is very common)

基于ULA(均匀圆形阵列)的DOA估计算法代码，可参考(ULA (uniform circular array)-based DOA estimation algorithm code)

研究了基于信号强度模型的室内定位技术. 通过运用线性回归、补偿式线性回归和多元回归方法，利用 仿真数据建立了信号强度模型.(Indoor positioning technology based on signal strength model by using linear regression, the compensated linear regression and multiple regression method using simulation data signal strength model.)

基于MATLAB的卷积交织编译码研究 基于MATLAB的卷积交织编译码研究(MATLAB-based encoding and decoding of convolutional interleaving MATLAB-based Encoding and Decoding of Convolutional Interleaver)