GSM无线子系统信令

这是我收集的几个通信基础理论的Matlab仿真实现，包括bpsk、qpsk、ofdm以及信号衰减和延迟的仿真。尽管不是我本人原创，但比较都经典。文件为*.m格式-This is my collection of several communications infrastructure theory Matlab Simulation, including BPSK, QPSK, and the OFDM signal attenuation and delay in the simulation. Although it was not my original, but more are classics. M*. document format

发送UDP的源代码-send UDP source code

很有价值的代码，真的，谁看谁得。对你在编程中和项目开发中肯定有帮助。-valuable code, really, who in whoever. Right in your programming and project development is sure to help.

本程序包括一组子程序和中断程序，通过S7-200自由端口功能来产生从Modbus RTU. 它支持下列Modbus功能：----1.读输出(线圈)----2.读输入(触点)----3.读保持寄存器(V 存储器).----4.读输入寄存器----5.写单路输出----6.写单路保持寄存器----15.写多路输出----16.写多路保持寄存器-this includes a subroutine and the interruption procedure for the adoption of the S7-200 free port functions to generate from the Modbus RTU. It supports the following functions : a Modbus. Reading output (2) coil. Reading input (contact)---- 3. Reading maintain registers (V memory ).---- 4. Reading input register---- 5. write single-output---- 6. write to maintain the single-route Register---- 15. write multiple output---- 16. write multiple maintain registers

GPRS主台软件，支持DL/T645协议， 实现抄收电表软件。-GPRS Main Desk software, support DL/T645 agreement, realize Collecting meter software.

DNP3 Object Library Documentation (*.doc extension) 2.1 GENERAL This section describes the basic rules for the declaration of information elements. These rules have been derived from the IEC TC57 870 series of standards or drafts. These rules provide an unambiguous means of describing and representing data irrespective of its origin. Device profile documents are used to indicate the exact origin and meaning of the data object for each telecontrol device.

使用DELPHI进行串口通信软件的编辑，使用的控件是MSComm，可以实现串口号、波特率、校验位、停止位、通信方式等的选择。

可以自己设置读取路径，也可以使用默认的路径，界面比较友好，在用户输入指令错误的情况下会自动提示重新输入，可以根据中文查找，可以添加和删除内容，还可以修改指定的内容，总之功能还算比较强大吧，更加重要的是能够识别电话号码，唯一美中不足的是没有能够自动识别电子邮件地址的格式，相信高手一定能够帮我完善这样一个功能啊！（我已经把那个源文本文件包含进去了，大概的格式就是那样，大家要更改内容就按照我给的那个文件更改，输出结果支持自动对齐）

采用C++ Builder开发的GPS接收程序，串口采用SPCOMM控件，能够从接收的数据中读取时间、经纬度。-with C Builder development of the GPS receiver procedures used SPCOMM Serial control, to receive data from the reading time, longitude and latitude.

motorola首席技术官的关于硬件系统的软件开发全过程的文档-on the hardware system software development process documentation