S7-200_与S7-300之间的以太网通讯。
S7-200_ Ethernet communication with s7300 (2020-12-10, Others, 1191KB, 下载0次)
这是一份介绍CDMA2000核心网协议的演示文稿，内容详细。
This is a presentation introducing the CDMA2000 core network protocol. (2019-11-22, Others, 1487KB, 下载0次)
现代数字通信与编码理论by西安电子科技大学白宝明
Modern Digital Communication and Coding Theory by Bai Baoming, Xidian University (2019-04-03, Others, 7509KB, 下载4次)
Neo_M590E R2 GPRS模块AT指令集（国网版）V1.4版本
Neo_M590E R2 GPRS Module AT Instruction Set Version V1.4 (2019-02-20, Others, 1308KB, 下载7次)
从终端设备的角度讨论异构网络中的频谱感知问题。
Considering the spectrum sensing in Heterogeneous Networks, the problem of devices is discussed. (2017-03-15, Others, 909KB, 下载1次)
TDC-GP21应用指南，用于热量表开发
TDC-GP21 Application Guide，Applied to the calorimeter development (2013-01-30, Others, 3190KB, 下载75次)
华为以太网接口规范，以太网接口作为一种宽带网的基本通信接口在公司的产品中得到了大量应用。本
规范依据IEEE802.3标准，提供了以太网基本的设计内容，并吸收了公司成熟产品的相
关设计经验，规定了公司对已有器件的推荐设计电路，以便于公司的共享资源建设。
Huawei Ethernet interface specification, the Ethernet interface as a basic communication interface of a broadband network in the company' s products have been a large number of applications. This specification based on the IEEE802.3 standard, provide the the Ethernet basic design content, and absorb the experience in the design of the company' s mature products, the provisions already recommended design circuit devices, in order to facilitate the construction of the shared resources of the company. (2012-10-23, Others, 535KB, 下载20次)
S7-200以太网通讯图文教程
S7-200通过CP243-1或 CP243_1IT接入工业以太网。
S7-200以太网通信主要有以下几种方式：
★ S7-200之间的以太网通信
★ S7-200与S7-300/400之间的以太网通信
★ S7-200与OPC及WINCC的以太网通信
S7-200 Ethernet communication graphic tutorial
(2011-12-16, Others, 1105KB, 下载14次)
收集的有关宽带电力线通信的资料,包括其应用.组网方案等
Collection of information on broadband power line communication, including its application. Networking programs (2011-09-22, Others, 23620KB, 下载10次)
With its promise of a target transmission
range of up to 30 miles and a
target transmission rate of more
than 100 Mbps, WiMAX—the
commercialization of the evolving IEEE 802.16
standard—is the latest hot technology. A recent
amendment boosted the protocol’s mobility support,
making it even more attractive to roaming users.
The standard specifies both a common physical
layer and a media access control (MAC) layer
for WiMAX networks, but to make such networks
more usable and reliable, several security issues
must be addressed first. In this article, we introduce
the security protocols used in WiMAX networks
and discuss the problems they confront
With its promise of a target transmission
range of up to 30 miles and a
target transmission rate of more
than 100 Mbps, WiMAX—the
commercialization of the evolving IEEE 802.16
standard—is the latest hot technology. A recent
amendment boosted the protocol’s mobility support,
making it even more attractive to roaming users.
The standard specifies both a common physical
layer and a media access control (MAC) layer
for WiMAX networks, but to make such networks
more usable and reliable, several security issues
must be addressed first. In this article, we introduce
the security protocols used in WiMAX networks
and discuss the problems they confront (2011-09-22, Others, 610KB, 下载8次)
光网通信技术第三版，东南大学光网技术概论课程英文教材
Optical Communication Technology Third Edition, Southeast University, Introduction to optical network technology in English teaching courses (2011-07-26, Others, 4291KB, 下载18次)
ASON的量子通信网络构建和量子交换机设计
ASON quantum communication and quantum switches are designed to build networks (2011-07-03, Others, 688KB, 下载9次)
Modbus通信规范，含串口和以太网规范
Modbus Protocol Reference Guide、Modbus TCP (2011-06-15, Others, 554KB, 下载6次)
PLC与上位机的通讯方式PPI通讯
以太网通讯
MPI通讯
RS485串口通讯
PLC and superordination machine of communication profibus
RS485 communication frames
Computer communication manner
(2011-05-27, Others, 148KB, 下载16次)
关于zigbee的简单介绍 希望对大家有用
A simple description of zigbee hope to be useful (2010-04-22, Others, 925KB, 下载6次)
网络通信，单位组网技术，路由器与交换机的配置……
Network communications, the unit networking technologies, routers and switches, the configuration of ... ... (2010-01-13, Others, 73KB, 下载3次)
七号信令网是我国的电信主干网，在从事电信相关行业的朋友可以下载学习
On the 7th signaling network is the backbone of China s telecommunications network, engaged in telecommunications related industries friends can download the learning (2008-09-16, Others, 1208KB, 下载10次)
西门子S-200编程软件教程，西门子S-200编程软件教程
Siemens S-200 programming software tutorial, Siemens S-200 programming software tutorial (2008-09-12, Others, 11660KB, 下载93次)
题目：移动Ad hoc网络多播路由协议及OPNET仿真研究.nh 内容：本文主要研究移动Ad hoc网络中的多播路由协议，分析多播路由协议在移动自组网络中对网络的各项性能指标的影响，为获得具有较优网络性能的多播路由协议提供科学参考，也为在使用移动自组网络中部署多播路由协议提供理论依据。 (2008-06-09, Others, 3375KB, 下载79次)
http://www.pudn.com/Download/item/id/485825.html
以太网设备交换技术规范里面有很详细说明希望对大家有用
Ethernet equipment inside the exchange of technical specifications have a very detailed description of hope to everyone useful (2007-07-25, Others, 1560KB, 下载16次)