example1.

解n阶线形方程组Ax=b的列主元高斯消去法的通用程序如下(下列程序都是在 matlab平台下编写的)(Solution of n-order linear equations Ax = b of the PCA out of the general Gaussian elimination procedure is as follows (the following procedures are prepared under matlab platform))

说明：  此为LDPC低密度校验码的编译码的原理与应用的详细介绍。包括各种信道模型下的仿真结果，有助于更好的学习通信系统的编译码过程的实现。(This is the LDPC coding and decoding LDPC codes principles and applications in detail. Including channel model simulation results, contribute to a better communication system of learning to achieve encoding and decoding process.)

本matlab程序用DFP法求解多元模型的最小值（给出初始点和精度要求条件）。(The matlab program using DFP method for solving the minimum multivariate model (given initial point and precision conditions).)

In this paper, we present a novel data-based method for simultaneous Maximum Likelihood (ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision multiplexing (OFDM) systems. Statistical properties introduced by the cyclic pre痻, a guard space between OFDM symbols, provide su眂ient information about the unknown parameters. It is shown that the redundancy introduced by this cyclic pre痻 allows the estimation to be performed without additional pilots. Simulations show that the performance of the frequency estimator is applicable in a tracking mode while the timing estimation can be used in an acquisition mode.

matlab编程基础教程，适用于matlab入门学习和参考。简明易懂，直观易上手。(programming in matlab。)

matlab源程序,用Sobel算子和拉普拉斯对图像锐化(Matlab source code, image sharpening of Sobel operator and Laplasse )

集群通信随机接入仿真，主要是针对集群用户接收与普通用户接收的对比（直方图），集群用户正确接收率、普通用户接收率，总的误判率。(Cluster communication random access, cluster users and ordinary users access contrast (histogram), cluster users receive the accuracy and ordinary users receive the accuracy rate of miscarriage of justice problems.)

基于语音信号处理的MATLAB平均幅度差函数，比自相关函数计算量要少。(Based on the average amplitude of the speech signal processing functions, less than the autocorrelation function computation.)

说明：  l雷诺方程离散求解的基本思路以及程序编写思路(The finite difference method of Reynolds equation and the realization of related programs)

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(calculation of the size factor extinction efficiency and the efficiency of scattering, absorption efficiency, after scattering efficiency of)