检查串口是否联有modem

在OFDM上使用QPSK的仿真程序。有做理论分析的可参考-OFDM used in the simulation program QPSK. Theoretical analysis is done of reference

Wireless Sensor Network SEcurity demo

想做AVR下移植UC／OS－II RTOS的朋友可以用这个教程来摆脱ICC编译器的单调界面，使写程序与改程序变得更加简单，方便-AVR wants to transplant under the UC/OS-II RTOS of a friend can use this course to shake off the monotony of ICC compiler interface, so that written procedures and the procedures to become more simple and convenient! ! !

WCDMA接口协议中文版，用于详细了解WCDMA接口结构组成及流程-Chinese version of WCDMA Interface Protocol for details about the composition and structure of WCDMA interface flow

这是一份关于串口编程的读书笔记，对于使 用VC进行编程的同行应该有一定的帮助。-This a serial programming on the study notes, for the use of VC peer program should be some help.

近日从网上下载一VB实现异步串口通讯的文章,很实用,特与大家共享.-recently downloaded from the Internet a VB asynchronous serial communication articles very useful, especially to share with you.

3G中重要的应用，分析讲解了可视电话的基本原理和信令流程，及一些背景知识-3G important application, analysis of the video telephony on the basic principles and signaling processes, and some background knowledge

CS1100驱动 CS1100驱动 CS1100驱动 CS1100驱动-CS1100 driver CS1100 driver CS1100 driver CS1100 driver CS1100 driver CS1100 driver

xmodem协议源码实现 -The source of xmoderm protocol

uwb_ppm_bpsk的源码,可以由此学习UWB的调制解调方式,对研究UWB有很大帮助-uwb_ppm_bpsk source code, which can study the UWB modulation and demodulation, UWB research will be of great help