Funcoes5_20140923171335

说明：  检点检测，经测试可用，环境为matlab(harris detecter based on matlab)

如何解决跳频多用户复用体系中的多用户检测问题？包括正交跳频序列的产生 多用户检测方案的设计(multi-user detection ,orthogonal frequency.)

说明：  RBF和BP分开的两个神经网络，可以用于对比，可适用于多种背景(RBF and BP separate two neural networks, can be used for comparison, can be applied to a variety of backgrounds)

Experiments on effects of synchonization errors in OFDM receivers

这是一本介绍使用matlab中现有函数对图像进行处理的入门书(This is an introduction to use matlab function of the existing image of the entry-book deal)

这里面有两个程序，两个都是采用4QAM调制。不过个人觉得第一个更容易懂，因为写的很有条理。我改的那个程序就是根据这个来的。 不过在这里面有个问题就是信道系数只能是由高到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]这个是老师给我的仿真中常用的信道系数，这个成为归一化信道，就是系数平方和为1. 第二个程序没有涉及到信道系数，但是这个程序当中，在128个子载波中，前后有32个空载波，这个在OFDM中也是经常用的，这样可以降低误码率。 (And there are two programs, two are based on 4QAM modulation. But personally feel that the first is easier, because the writing is organized. I changed that procedure is based on the past. However, there is a problem in that there is only channel coefficients from high to low, we can try and change into [0.227 0.46 0.688 0.46 0.227] This is the teacher gave me the simulation channel coefficient commonly used, this became normalized channel, is coefficient of the square and is 1. The second program is not related to channel coefficients, but this program which, in the 128 sub-carriers, the before and after the 32 air carriers, the in OFDM is also often used, which can reduce the error rate.)

VC++实现的离散余弦变换，用于matlab环境，与系统提供的不同。(VC++ implementation of the discrete cosine transform for the matlab environment, and the system provides different.)

KNN算法实现，初始化模糊成员等级 initialize fuzzy membership grades of sample output for fuzzy KNN(initialize fuzzy membership grades of sample output for fuzzy KNN)

我从这里下载一个MATLAB文件来计算激光的模式，拉盖尔-高斯模式，但它不能正常工作。所以我说我自己的函数。这是很简单的功能，我希望它是有效的以及。我用它和后结果我得到了。(i download one matlab file from here to calculate the modes in laser, Laguerre-Gauss modes but it was not working properly. So i wrote my own function. It is pretty simple function, i hope it is efficient as well. i used it and post the result i got.)

电源系统常用的电压控制仿真系统，研究人员必备佳品。(Power system voltage control simulation system used, the researchers required to share.)