cdma_code

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

Wiener滤波器（维纳滤波器）的C程序，学习现代数字信号处理理论时可以用来参考。-Wiener filter (Wiener filter) of C procedures, learning modern digital signal processing theory can be used to refer to.

AIN系列ALPHA 全电子式多功能电能表 通讯规约-AIN series ALPHA-wide multi-function watt-hour meter electronic communications Statute

中国移动TD-SCDMA基站维护故障案例，稀缺资源，学习TD的一手好资料。-China Mobile TD-SCDMA base stations to maintain fault cases, scarce resources, learning a good first-hand information on TD.

4dpsk和8dpsk的matlab仿真实现，采用蒙特卡罗仿真法，绘制误码率曲线-the realization of 4dpsk&8dpsk by matlab tool.it use the Monte Carlo methods to draw the graph.

vb写的tapi拨号程序-Tapi dialing program writed by vb

能过串口中短信发送-which will be a serial SMS

本程序用到GPRS和RS485通信实现主机和从机之间的通信，送用的MCU为MSP430

不错的客户端连接程序，希望大家喜欢，里面是一个客户端的程序，一会会提供服务端的程序-good client procedures in the hope that everyone likes, there is a client process, will provide a service side of the process

超宽带链路分析主程序书标有example的M文件 能很直观的看到超宽带不同距离的带宽（速率）-Analysis of ultra-wideband link the main program book marked example of the M documents can very intuitive different distances to see the ultra-wideband bandwidth (rate)