am and dsb modu and demodu

用VC++6.0的Sockets API实现一个聊天室程序,是使用socket编程的很好的一个文档.-VC 6.0 Sockets API a chat room procedures, the use of socket programming is a good one document.

双音多频的DTMF信号编码程序，产生DTMF信号进行编码。-DTMF DTMF signal coding procedures have DTMF signal coding.

zmodem协议源码实现 -The source of zmoderm protocol

GSM 手机开发库，可用于开发短信、电话等相关功能-GSM handset development library can be used to develop SMS, telephone and other related functions

16c552中文资料-16c552 Chinese data

非常详细地介绍了GSM模块AT指令集的每条指令的功能，并附上例子。本文是全中文教程特别适合英文不是很好的初学者。-Very detailed description of the GSM module AT command set the function of each instruction, along with examples. This article is particularly suitable for the Chinese course English is not very good for beginners.

我自己用spcomm控件写的一个短信收发与串口调试为一体的小程序。可用于GSM模块的短信收发，和支持AT指令集的手机。软件所有原代码全部上转，多和大家一起交流!-my own use spcomm Control wrote an SMS transceiver and serial debugging as one small program. For GSM SMS transceiver module, and support for AT command set phones. All of the original software code in turn, the more we can all share!

ofdm 仿真的程序，包括参数定义，fft，ifft，调制解调等源码，很好用啊！-OFDM simulation procedures, including the definition of parameters, fft, ifft, modulation and demodulation, such as source code, with very good ah!

In this simulink model , baseband 8-ary PAM detection is simulated .A half-sine pulse shaped PAM signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The 8-ary PAM signal transmitted is recovered at the detector output.

资源描述车辆跟踪系统将安装和安装在车辆中的电子设备，或车辆，目的是设计的计算机软件，使车主或三分之一方跟踪车辆的位置，收集数据的过程中。现代和车辆跟踪系统通常使用全球定位系统（全球定位系统）技术的定位，车辆，但其他类型的自动车辆定位和技术也可以使用。车辆信息可以通过互联网或与电子地图，通过互联网或专门的软件