nmf-1.01

现代通信系统常用matlab算法实例，适合大家学习matlab(Matlab algorithm commonly used in modern communication systems examples for them to learn matlab)

awesome very useful for basic concepts in matlab

音频信号的处理:导入一个时长若干秒的音频信号，得到该音频文件的频率fs和幅度A，显示信号的时域图和频谱图，加入频率为fs/3，幅度为2A的噪声，分析、显示并播放有噪声时时域图和频谱图，以及滤除噪声后的信号的时域图和频谱图。(Audio signal processing: Import a duration of several seconds of the audio signal to obtain a frequency fs, and the amplitude A of the audio file, the time-domain diagram of a display signal, and frequency spectrum, the frequency fs/3, amplitude noise 2A, analysis , display and playback of the noise always domain diagram and frequency spectrum, and the signal after the noise filtering time-domain diagram and spectrum FIG.)

说明：  一阶自回归滑动序列，随机过程作业，计算其自相关函数。(The first order autoregression sliding sequence of operations of stochastic processes, to calculate the autocorrelation function.)

雷达交叉定位精度分析，CRB界确定，寻求最远定位距离！(Radar cross positioning accuracy analysis, CRB sector determined to seek the farthest distance positioning!)

说明：  这是一个基于M/M/S类型的排队论仿真程序。M/M/S表示到达时间为负指数分布，服务时间为负指数分布，服务设备数量为S个的排队系统。 （1）到达模式：严格意义上讲是一个接着一个到达，而且到达时间间隔服从参数为mean_arr的负指数分布； （2）服务模式：服务台的数量为server_num,且每个服务台服务一个顾客的服务时间服从参数为mean_serv的负指数分布； （3）排队规则：满足先进先服务，服务快的先离开的规则。 (This is a based on the M/M/S types of queuing theory simulation program. M/M/S said time of arrival of the negative exponential distribution and service time for the negative exponential distribution, service equipment for the number of S-queuing system. (1) mode of arrival : a strict sense is a one followed arrived, but the inter-arrival time parameters mean_arr obey the negative exponential distribution; (2) mode : The number of help desk server_num. with each help desk services a customer service parameters mean_serv obey the negative exponential distribution; (3) queuing rules : first meet advanced services, the first to leave fast rules.)

Implementation adaptive filter based lms algorithm

可以自动调整matlab figure的尺寸，使众多图保持一致，用于论文中图的调用比较方便，更加美观(Matlab figure can automatically adjust the size, so that many figure consistent call graph paper for more convenient, more beautiful)

基于支持向量机的语音信号端点检测，主要是去掉首位的噪声。(Voice signal endpoint detection based on support vector machines, mainly to get rid of the first noise.)

一个可以把Matlab复杂网络邻接矩阵直接转化为Pajek可以识别的网络文件（.net）很实用，学习复杂网络的可以下载(a programme that can transform the adj_matrix in matlab into .net file that pajek can recognize)