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用户界面（或接口）是指：人与机器（或程序）之间交互作用的工具和方法。如键盘、 鼠标、跟踪球、话筒都可成为与计算机交换信息的接口。 图形用户界面（Graphical User Interfaces ，GUI）则是由窗口、光标、按键、菜单、文 字说明等对象（Objects）构成的一个用户界面 (User interface (or interface) refers to: Human and machine (or process) the interaction between the tools and methods. Such as keyboard, mouse, track ball, microphone and computer can become the interface to exchange information. Graphical user interface (Graphical User Interfaces, GUI) is by the window, the cursor, buttons, menus, text and other objects (Objects) consisting of a user interface)

这个程序用matlab演示扩频及其频谱。(Matlab demo using this procedure and its Spread the spectrum.)

基于matlab，针对调幅AM、调频FM和调相PM信号，分析在不同的噪声环境，包括高斯白噪声、色噪声、非高斯噪声及正弦干扰中，各种信号的二阶循环谱。可根据需要改变程序中信号或噪声环境，分析结果。(Based on matlab, AM for AM, FM FM and PM phase modulation signals, analysis of noise in different environments, including Gaussian white noise, colored noise, non-Gaussian noise and sinusoidal interference, the various second-order cyclic spectrum signals. May need to change the process in accordance with the signal or noise environment, the results of the analysis.)

说明：  遗传算法参考程序，可解决大部分初学者的需求。初学者 可以尝试(Genetic algorithm reference program, can solve the needs of most beginners very good)

NC-OFDM系统中发送端不同的数字调制方式(NC- OFDM system in different ways of digital modulation)

Matlab 安装指南日文说明 installation guild document(Matlab Installation Guide Japanese instructions installation guild document)

determines the output sequence of a binary convolutional encoder

identifacation systems

matlab主要指令集合表，以供大家查阅之便(matlab main instruction set table for access to the U.S. will)

用MATLAB编写的TLS-ESPRIT算法，算法原理可参考张贤达版的现代信号处理，绝对可运行，程序配合书非常容易理解，而且稍微改改就可以变为基本的ESPRIT算法。(Written by MATLAB TLS-ESPRIT algorithm, the algorithm can refer to Zhang XD version of the principle of modern signal processing, absolutely can run the program with the book is very easy to understand, and can become a little change to change the basic ESPRIT algorithm.)