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space-time-block-coding
- An adaptive transmit diversity scheme with quadrant phase constraining feedback is proposed in this paper. With simple linear operations at both transmitter and receiver, the proposed algorithm can achieve better system performances with only 2M
S7-200_pc_access
- PC-ACCESS 专门为PLC7-200设计的OPC服务器,这是它的简单的教程。希望对大家有帮助。-PC-ACCESS PLC7-200 designed specifically for the OPC server, which is its simple tutorial. I hope to help.
RS232-Introduce-
- RS232 串口介绍和初步了解,包含DB9引脚定义,电气特性说明,电路图说明,参数说明, 具体传输格式,传输的波形, 对设计Rs232的应用者很有帮助,简单明了易懂。 -Introduction and preliminary understanding of the RS232 serial port, including the DB9 pin definitions, electrical characteristics, circuit descr iption, paramet
Xinox-Software
- 在电力系统通信中,数字光纤通信由于其本身的优点得到越来越广泛的应用。数字光纤通信系统中,从电端机传输过来的电信号均要结合数字光纤通信传输的特点经过线路码型的转换。通过线路码型的转变平衡数字码流中的“0”和“1”码字,从而避免码流中出现长“0”或者长“1”的现象。在数字光纤通信系统中比较常用的线路码型就是mBnB码型,mBnB线路码型的最大优点就是最大相同码元连码和少、定时信息丰富、并且有简单成熟的误码监测与码组同步的方法。 -In the power system communication
67827_05
- Another simple, inexpensive, and very versatile antenna type is the loop antenna. Loop antennas take many different forms such as a rectangle, square, triangle, ellipse, circle, and many other configurations.
05441004
- Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power
WiFi-introduction
- WIFI 的扫盲文档,比较简单而详细,适合做WLAN 学习-WIFI document literacy, relatively simple and detailed, suitable for WLAN learning
BCH-code-_matlab
- 循环码是线性分组码中最重要的一种子类,是目前研究得比较成熟的一类码。它的检、纠错能力较强,编码和译码设备并不复杂,而且性能较好,不仅能纠正随机错误,也能纠正突发错误。循环码还有易于实现的特点,很容易用带反馈的移位寄存器实现其硬件 。循环码具有许多特殊的代数性质,这些性质有助于按照要求的纠错能力系统地构造这类码,并且简化译码算法,目前发现的大部分线性码与循环码有密切关系正是由于循环码具有码的代数结构清晰、性能较好、编译码简单和易于实现的特点,因此在目前的计算机纠错系统中所使用的线性分组码几乎都是循
CRC-encoder
- 奇偶校验码作为一种检错码虽然简单,但是漏检率太高。在计算机网络和数据通信中用E得最广泛的检错码,是一种漏检率低得多也便于实现的循环冗余码CRC (Cyclic Redundancy .Code),CRC码又称为多项式码。-Parity error detection code as a simple, but the missing rate is too high. In computer networking and data communications using the most wi
An-Introduction-to-Local-Area-Networks
- this a book, which I wrote 2 years ago. It is written in Persian language. this book is very good for people who wants to start to learn network concepts. this book explains complicated concepts in a simple and understandable way.-this is a book, whi
CRC-algorithm-design
- 数字通信系统的数据传输为了保证数据传输的有效性 ,常用的方法就是对传输数据进行 CRC校验。首先分析了CRC的校验原理 ,然后以常见的CRC-16为例 ,提出了生成CRC码的算法 ,给出了该算法的实现软件流程图 ,并在Windows平台上用 VC++实现。该算法实现简单 ,实时性强 ,非常适合于大数据块传输的情况。计算机仿真实验表明 ,这是一种有效地实现CRC校验码的方法 ,为通信系统的差错控制提供了一种简捷的解决方案。-Digital communication system of data
Network-simulator-2-editrice
- 介绍UC Berkeley改进过的NS2,介绍其功能、使用方法,与其一起工作的工具,分析其源代码,并介绍对它进行简单扩展的方法。-UC Berkeley introduced the NS2 improvement, introduces its function, using method, work with it tools, analyzes its source code, and introduce the method of simple expansion.
CDMA2000-optimization
- CDMA2000网络规划与优化案例教程(龚雄涛)的电子版,论述 简单而内容详细,适合初级学习。-Case Tutorial (Gong Xiongtao) electronic version of the CDMA2000 network planning and optimization, discusses simple and detailed content, suitable for primary learning
MODERN-network-new-technology
- 现代网络新技术概论,比较新的技术与方向的论述,论述的简单明了.-Introduction to the new technology of modern networks, the relatively new technology and the direction of exposition exposition simple.
Modern-network-design
- 使用opnet软件建立网络的简单例子,适合初学者使用,步骤很详细-Opnet software to create a simple example of the network, suitable for beginners to use, very detailed steps
Sockets-notes
- Network Programming Topics in this section include: • What a socket is • What you can do with a socket • The difference between TCP/IP, UDP/IP and Multicast sockets • How servers and clients communicate over sockets
S7-200biancheng
- 模拟电位器 H–2 H.2 怎样使用高速计数器 H–6 H.3 自由通信口模式的简单应用 H–10 H.4 处理脉宽调制 H–13 H.5 可逆电动机起动器电路――适用于改变三相交流感应电动机旋转方向 H–16 H.6 步执行顺序(事件鼓定时器) H–19 H.7 S7-200用自由通信口模式和并行打印机连接 H–23 H.8 通过自由通信口模式接受条形码阅读器的信息 H–27 H.9 集成脉冲输出通
s7-200bcc
- 模拟电位器 H–2 H.2 怎样使用高速计数器 H–6 H.3 自由通信口模式的简单应用 H–10 H.4 处理脉宽调制 H–13 H.5 可逆电动机起动器电路――适用于改变三相交流感应电动机旋转方向 H–16 H.6 步执行顺序(事件鼓定时器) H–19 H.7 S7-200用自由通信口模式和并行打印机连接 H–23 H.8 通过自由通信口模式接受条形码阅读器的信息 H–27 H.9 集成脉冲输出通
MPLS-en-2.31
- simple example in NS2 of mpls
tipos-de-trafico-y-tcp-y-udp
- code of traffic TCP and UDP in NS2.. simple tcl