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基于MATLAB的简单通信系统仿真 13折线 PCM编解码 BPSK调制解调 MSK调制解调(MATLAB-based simulation of a simple communication system 13 line PCM codec MSK modulation and demodulation BPSK modulation and demodulation)

实现聚类K均值算法： K均值算法：给定类的个数K，将n个对象分到K个类中去，使得类内对象之间的相似性最大，而类之间的相似性最小。 缺点：产生类的大小相差不会很大，对于脏数据很敏感。 改进的算法：k—medoids 方法。这儿选取一个对象叫做mediod来代替上面的中心 的作用，这样的一个medoid就标识了这个类。步骤： 1，任意选取K个对象作为medoids（O1,O2,…Oi…Ok）。 以下是循环的： 2，将余下的对象分到各个类中去（根据与medoid最相近的原则）； 3，对于每个类（Oi）中，顺序选取一个Or，计算用Or代替Oi后的消耗—E（Or）。选择E最小的那个Or来代替Oi。这样K个medoids就改变了，下面就再转到2。 4，这样循环直到K个medoids固定下来。 这种算法对于脏数据和异常数据不敏感，但计算量显然要比K均值要大，一般只适合小数据量。(achieving K-mean clustering algorithms : K-means algorithm : given the number of Class K, n will be assigned to target K to 000 category, making target category of the similarity between the largest category of the similarity between the smallest. Disadvantages : class size have no great difference for dirty data is very sensitive. Improved algorithms : k-medoids methods. Here a selection of objects called mediod to replace the center of the above, the logo on a medoid this category. Steps : 1, arbitrary selection of objects as K medoids (O1, O2, Ok ... ... Oi). Following is a cycle : 2, the remaining targets assigned to each category (in accordance with the closest medoid principle); 3, for each category (Oi), the order of selection of a Or, calculated Oi Or replace the consumption-E (Or))

optimization of speeed of bldc motor is now a days very much demanded in history

这里的k-means聚类，是事先给出原始数据所含的类数，然后将含有相似特征的数据聚为一个类中。(Where k-means clustering, is given in advance the number of classes contained in the original data, then the data contained similar characteristics grouped into a single class.)

呵呵,第一次来很多东西不懂 还请多多指教啊! 几个编的简单的FFT和滤波器设计 希望能有点用(Oh, the first to understand a lot of things you will also enlighten ah! several series of simple and FFT filter design with a little hope)

该程序可实现巴特沃斯滤波器低通、高通、带通、带阻滤波器特性(The program can realize bart wo low-pass filter, qualcomm, bandpass filter, belt resistance properties )

matlab下的危化品泄露扩散模拟软件，能够模拟危化品泄露后的毒害区域。(hazards area simulate on matelab.)

Digital signal processing using matlab...e book useful for students............

this is a simulation file for filters

基于matlab的成绩统计表，输入成绩，自行统计最高分，最低分，均分等(Matlab-based performance statistics, enter grades, self Statistics highest score, lowest score, sharing, etc.)