qiankui

这个Matlab程序是关于OFDM调制的。这里使用了BPSK调制，显示OFDM在误码率上的下降。(This Matlab program is about OFDM modulation. Here the use of BPSK modulation, show the OFDM at BER on the decline.)

三步法哪l是一种较好的搜索算法，快速而且高效，它是在对数法的基础上对 其进行了改进，提出在每一步搜索后搜索步长均减半的算法。它基本保持了FS的 性能，但其计算量只有FS的10％左右。TSS在会议电视和可视电话中应用较多， 它通过三步搜索，逐步较小搜索步长。若最大搜索范围为士7，搜索精度取一个像 素，则步长为4、2、1，共需三步即可满足要求，从而得名。 (L three-step method which is a better search algorithm, fast and efficient, it is on the basis of the number of law be improved, made in every step of the search after the search step of the algorithm are reduced by half. It basically maintained the performance of FS, but the calculation is only about 10 of FS. TSS at the meeting on television and video telephony in the application of more three-step search through progressively smaller search step. If the maximum search range of disabilities 7, search for a pixel accuracy, the step size for the 4,2,1, a total of three steps to meet the requirements, thus its name.)

假设给定一个加权连通图G，G的边集合为E，顶点个数为n，要求其一棵最小生成树T。(Suppose given a weighted connected graph G, G the edge set is E, the number of vertices is n, requiring a minimum spanning tree T.)

5 link simulation technique using matlab

正交频分复用是一种多载波宽带数字调制技术。相比一般的数字通信系统， 它具有频带利用率高和抗多径干扰能力强等优点，因而适合于高速率的无线通信系统。( OFDM Simulator -------------------------------------------------------------------------------- MIMO OFDM Simulator: OFDM.m: OFDM Simulator (outer function) create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile. svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes. BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance. ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel). chow_algo.m: Apply Chow s algorithm to generate a particular bit and energy allocation. EnergyTableInit.m: Given the SNR values, form a table of energy increments for )

一个简单的matlab参考逆变电路模型,可以实现逆变电路的基本功能，用于教学。(A simple MATLAB inverter model)

Help ful for those programmers doing project

说明：  OFDM的基本框架搭建，实现OFDM技术的基本功用，适合于初学者(Build the basic framework of OFDM, OFDM technology to achieve the basic skills to use, suitable for beginners)

平面桁架Matlab程序，计算刚度矩阵使用程序(Truss Matlab program, use the program to calculate the stiffness matrix)

codigo MLP teste matlab