数据表的GSM / GPRS无线百科

应用背景该代码用于在线多参数水质监测，测量DO，PH，EC，CHLA和TUR的参数及其温度数值，该代码已测试通过，可以使用，采用RS485串口通信，并运用modbus通信协议。关键技术本项目采用了通过STM32控制模拟开关，渐而控制五个传感器的导通情况，用来控制传感器发送采集到的数据，并将采集到的数据打包起来，发送发给上位机。

定时恢复的matbal仿真代码.适合于仿真和误码并对-Timing recovery matbal simulation code. Suitable for simulation and error and

很不错的vb源码，大家试试就知道了，好支持一下-Vb source code is very good, we try to know, to support you

此代码为简单的ftp服务器，里面有课程设计相关内容，适合在校大学生学习和使用-This code for a simple ftp server, which has curriculum design-related content, suitable for college students to learn and use

扩频通信.第一本有关扩频系统的专著是R.C.Dixon于1976年出版，是一本IEEE专利，1977年出版。1978年在日本京都召开国际无线通信咨询委员会公布研究成果。1982年在美国召开第一次军事通信会议，两次报告在军事中的应用。1985年美国提出CDMA(码分多址)的概念同年美国联邦通信委员会(FCC)制定扩频通信的标准和规范，逐步转入民用的商业化研究-Spread Spectrum Communication. The first book on spread-spectrum systems is RCDixon monograph published in 1976, is an IEEE patent, published in 1977. In 1978 in Kyoto, Japan, an international wireless communications Advisory Committee published research results. 1982 in the United States held its first military communications conference, two reports in the military applications. The United States in 1985 proposed CDMA (Code Division Multiple Access) the concept of the same year the United States Federal Communications Commission (FCC) the development of spread spectrum communication standards and norms, and gradually transferred to the commercialization of civilian research

DOS下的modem开发-DOS under the modem development

Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels 一篇信道估计的经典文章-Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency se lective fading channels a channel estimation of the classic article

基于Visual C++的Winsock API研究-A Study On WinSock API Based On Visual C++

VB与ABPLC实现通讯，能监控PLC内部寄存器的内容。很好用的哦。

提供串行口存取的 Object Pascal 类 ( 1.2 版，附源码 )，作者 : Maarten Bekers。 -Serial port to provide access to the Object Pascal category (1.2 version, with source code), the author: Maarten Bekers.