OPNET仿真实例，有助于初学者的快速学习。

pos机关于GPRS协议的调用，大家参考-pos authorities call in the GPRS protocol, we refer to

本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF signals, mainly related to the telephone dial tone of the basic principles of synthesis and identification of the main methods, the use of MATLAB software and the FFT algorithm on the telephone communication system dial tone Synthesis and Recognition . And further the use of MATLAB in the production of graphical user interface simple and intuitive GUI interface simulation. Able to take advantage of matrix synthesis of different fundamental frequency 0- 9 different keys of the dial tone and be able to different dial tone to be the correct identification, the dial tone from a telephone number to resolve the process of completion of the telephone dial tone system, a simple experiment simulation

采用服务器/客户机进行双机通信，通过局域网送至客户计.       在服务器的框图程序中，首先指定网络端口，并用侦听TCP节点建立TCP侦听器，等待客户机的连接请求，这是初始化的过程。   在用TCP节点进行通信时需要在服务器框图程序中指定网络通信端口号，客户机也要指定相同的端口，才能与服务器之间进行正确的通信。端口值由用户任意指定，只要服务器与客户机的端口保持一致即可。     在一次通信连接建立后，就不能更该端口的值了。如过的确需要改变端口的值，

uwb的欧洲标准，对MB-OFDM的超宽带物理层和MAC层进行了详细的规定-uwb European standards, the MB-OFDM UWB physical layer and MAC layer provides a detailed

相当不错的网络编程学习的文档! 可以用来学习和加深网络编程基础和原理!-Fairly good documentation of learning network programming! Can be used to study and to deepen the foundation and principles of network programming!

3GPP协议为通信编程的重要协议之一，该版本为TS25.462-7-3GPP agreement Communication Programming One of the key agreements, the version of TS25.462-7

织带机监测系统的上位机软件。RS-485总线，类MODBUS协议。可监测多台织带机的产量情况。

说明：TComPort component version 2.01 for Delphi 2_5 提供串行口 COM Port I/O 的构件 ( 2.01 版，附源码 ) -: TComPort component version 2.01 for Delphi 2_5 provide serial port COM Port I/O components (2.01 version, with source)

GPRS拔号程序,可以实现拔号，GPRS拔号程序,可以实现拔号-GPRS dial

信息论是由通信技术、概率论、随机过程和数理统计等相结合逐步发展而形成的一门新兴科学。其奠基人是美国数学家香农，他的《通信的数学原理》奠定了信息论的基础。 这是信息论与编码技术的教学课件。压缩包内含有6个ppt文件，每个ppt自成一章:1绪论、2信源及其熵、3信道及其容量、4信息率失真函数、5信源编码、6信道编码。是初学信息论的最好材料。-Information communication technology is, probability theory and mathematical statistics, stochastic processes, such as the combination formed by the progressive development of an emerging science. The founders of the United States Shannon mathematician, his " Mathematical Theory of Communication" has laid a foundation of information theory. This is the information theory and coding technology courseware. Compressed packet contains 6 ppt documents, each a separate chapter ppt: 1 Introduction, 2 source and its entropy, and its 3-channel capacity, information rate-distortion function 4, 5, source coding, channel coding 6. Information theory is the best learning materials.