载波同步是QPSK信号相干解调的关键技术。

采用atmel的tiny26的pll实现高速pwm，可方便进行电压等的调节。-high speed pwm using ATMEL tiny26 as MCU. It can be used for voltage regulator.

TAPI (1.4 )控件的特性如下：打外线电话，接听或拒绝内线电话。呼叫ID检测，DTMF音频，从电话记录或向电话回放WAV文件。-TAPI (1.4) controls the characteristics are as follows: get an outside line, or refuse to answer phones inside. Call ID detection, DTMF audio, from phone to phone records or WAV file playback.

Hello these pdf file is an ebbok for simulation wireless communication

根据c语言编程知识的完美演绎-c programming language based on the perfect interpretation of knowledge

用c++实现p2p代码，可以学习如何用c++实现p2p的通讯 很实用 -P2p using c++ implementation code, you can learn how to use c++ very practical realization of p2p communication

详细介绍了数据结构中关于树和图的相关知识,并通过C语言实现了关于树和图的个种操作,是学习C语言和数据机构的很好好材料-detailed data on the structure of the tree and plans related knowledge, and through C language on the map of the trees and the species of operation, is learning C language and the good data good materials

QFSK的调制与解调，用C写的主程序，汇编写的调制与解调的子程序-QFSK the modulation and demodulation, with the main program in C, compile writing, the modulation and demodulation of the Subprogram

FM的调制程序，基于matlab的通信系统仿真系列。供刚接触到matlab的朋友使用-FM modulation procedure, Matlab-based communications system simulation series. For begin to friends using Matlab

MYICQ为一款C/S架构即时通信软件，本代码包含完整的客户端和服务端源代码，MyICQ-0.8-alpha1源码，包含完整工程文件，代码完整，可以直接编译通过