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HART协议解析，非常完整，定能加快研发进度。(HART agreements, some of the information, in the hope that everyone has to help)

多功能电能表通信协议_645-2007.pdf(Multi-function watt-hour meter communication protocol _645-2007.pdf)

说明：  振铃芯片KA2410数据手册(Ringing chip KA2410 Data Sheet)

This thesis presents simulation data on array operation in wideband communication systems. It is shown that array structures with closer inter-element spacing outperform structures with much larger inter-element spacing. It is also shown that circular structures outperform linear structures. This performance dierence between the classications of arrays is due largely to the circular array s ability to handle high levels of interference. Even though a diversity combining scheme (MRC) was used in the simulator, the arrays provided interference rejection capabilities due to the closely spaced antenna elements.

dynamips的实际使用方法，很全面喔(the dynamips actual use, very comprehensive!)

采用Simulink 平台对OFDM 进行仿真，确定系统的参数，完成参数设置，构建了一个简单的OFDM通信系统。(Using Simulink platform to simulate OFDM, determine the parameters of the system, complete the parameter settings, and build a simple OFDM communication system.)

西門子CNC系統編程代碼表,對初學者幫助很大(Siemens CNC system control code )

ADIBEAM Abstract—the increase in navigation accuracy demanded by EGNOS and Galileo and their future evolution encourages the study and design of advance receiver architectures. In that direction, the ADIBEAM project focuses on the design of high accuracy ground stations, specifically GNSS Reference Stations, in order to improve its robustness in front of multipath and interference errors with the goal of achieving centimeter level tracking accuracy. The adoption of antenna arrays and digital beamforming at the ground reference station receivers is one of the most promising approaches to cope with errors induced by multipath and interference.

说明：  服务通讯程序，采用服务+客户端模式，有源代码可以自己修改研究(Services, communication procedures, using service+ client mode, the active code can modify their own research)

说明：  S7200 通过modbus 通讯与多块表通讯 定时轮询(Reading multi block instrument timing polling)