汽车行业CAN通讯SAEJ1939标准英文版

扩频通信，即扩展频谱通信(Spread Spectrum Communication)，它与光纤通信、卫星通信，一同被誉为进入信息时代的三大高技术通信传输方式。

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 )

针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

Asynchronous Transfer Mode (ATM) is a connection-oriented, packet-switched technology. The packets that are switched in an ATM network are of a fixed length, 53 bytes, and are called cells. The cell size has a particular effect on carrying voice traffic effectively. The ATM Adaptation Layer (AAL) sits between ATM and the variable-length packet protocols that might use ATM, such as IP.

说明：  交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)

使用opnet与matlab实现网络编码，源码在说明文档中有下载地址(Using opnet realize network with matlab coding, source code in the description in the document have Download)

One issue with underwater sensors is how to efficiently transfer large amounts of data collected by the node to an interrogating platform such as an underwater vehicle. It is often impractical to make a physical connection between the node and the vehicle which suggests an acoustic or optical wireless solution. For large amounts of data, the high bandwidth of underwater optical wireless is an advantage. A small, low-cost platform to demonstrate the potential of an optical wireless communications interface for underwater sensor nodes is demonstrated. To enhance the reliability and robustness of the optical wireless communication digital signal processing and error correction techniques are used. The system was tested in 3 and 7.7 meter tanks at 5 Mbps with the turbidity of the water controlled by the addition of Maalox.

针对GPS干扰特性，对GPS系统进行猛特卡落干扰仿真(GPS interference characteristics for the GPS system Meng tecka charged interference simulation)

SPMS deal 模块，SPMS deal 模——(SPMS deal 模块)

通信系统中常用的号码分析文档，非常实用，且好理解。(Communication system frequently used phone numbers of documents, very practical, and easy to understand.)