this code is about demodulation of 4qam

viterbi 约束长度为7的仿真，适用于DAB等卷积编码译码的仿真-viterbi constraint length 7 of the simulation, applicable to DAB decoding such as convolutional coding simulation

通过外部通信工具，发送短信，查看示读信息!-Through an external communication tools, send and receive text messages!

Async Professional 3这个工具包包罗万象：你在DELPHI和C Builder下编写通讯程序的一切。从简单的通讯到发送传真、寻呼以及INTERNET应用，只有Async Professional将所有通讯功能集中一起而又价格公道。Async Professional 3建立于TurboPower早期获得大奖的通讯库，并加入了你所需要的功能。一些强大的新功能包括数字寻呼（甚至基于INTERNET），FTP文件传输，RAS拨号自动脚本，新的高级VT100终端，FAX服务器控件以及其它等等。试用版（只有IDE运行时才工作）。-Async Professional 3 of the tool kit all-inclusive: you DELPHI and C Builder prepared with all the communication process. From simple communication to send a fax, paging and INTERNET applications, only Async Professional all communication functions together and at reasonable prices. Async Professional 3 was established in early TurboPower award-winning communications library, and add the features you need. Some powerful new features including digital paging (even based on the INTERNET), FTP file transfer, RAS dial-up automated scripts, the new senior VT100 terminal, FAX server controls, as well as other and so on. Trial version (only run when the work of IDE).

radar wf application

自己做的CSMA/CD的协议，花了好久，以前出错，在网上找了很多次，都没有贴出来的，这个是我根据库里面的例子做的，给大家做参考。

基于FPGA的2ASK调制与解调系统设计 实现2ASK信号的调制与解调功能，基带数据发送4级M序列，数据率为1kb/s，载波用信号源产生，频率为1MHz，用示波器观察已调波波形。

OFDM码与调制解调采用4-QAM。正交频分复用技术的代码，在整个范围内的工作状态。所使用的信道或者是AWGN信道。的BER（误码率）对SNR（信噪比），图形绘制。

VisualC++通信编程工程实例精解 Chapter 2 Example 1 MSCOMM控件编程实例 Example 2 基于Windows API的虚拟终端实现 Example 3 基于CSerialPort的串口多线程通信框架 调试工具串口调试助手-VisualC Communication Programming examples of precision engineering solutions Chapter 2 Example 1 M SCOMM control programming examples Example 2 based on the Windows API Virtual Terminal Example 3 CSerialPort based on the multithreaded Serial Communication Framework Debugging Tools Serial transfer Ban Help

是路由器的分组和画图，有图形显示，对于初学者有很大帮助~-router is the grouping and drawing, graphics, but for beginners to be of much help

Windows下编译eXosip、osip，以及UAC和UAS的例子