fetion

本论文以OFDM系统为基础，介绍了OFDM系统的基本原理，以及使用OFDM技术的优势所在，并且展望了今后的无线移动技术的发展前景。在简单介绍OFDM原理的同时，着重阐述了OFDM系统在不同信道环境和不不同实现方式下的误码性能。主要包括了OFDM系统在加性白高斯信道，在加性白高斯信道和多径干扰两种不同信道环境下系统的误码性能，其中后者还研究了系统在有保护间隔与无保护间隔的误码性能比较。在理论分析的基础 (This thesis is based on the OFDM system, the basic principle of the OFDM system, as well as the advantages of using OFDM technology, and future prospects for the development of future wireless and mobile technologies. OFDM principle in brief, focusing on the BER performance of OFDM systems under different channel conditions and different implementations. Including OFDM system in additive white Gaussian channel, additive white Gaussian channel and multipath interference of two different channel environment, the system BER performance, the latter of which also studied the system in a protected interval without guard interval BER performance comparison. The basis of theoretical analysis)

说明：  VC++编程环境下的USB编程(接收和发送数据）(VC++ Programming environment under the USB programming (receiving and sending data))

VC6连接Redis服务器示例，系统:win32 xp sp3，编译器:VC6，无依赖(VC6 connect Redis server example, the system: win32 xp sp3, compiler: VC6, no reliance)

可用于无协议串口调试和标准Modbus调试。例案：单片机无协议通信、变频器通信调试、PLC及工业仪表通信调试。(No agreement can be used for standard Modbus serial debugging and debugging. Example case: no agreement on single-chip communications, Converters debug communications, PLC and industrial instrumentation communication debugging.)

该程序是一个串口的数据接收程序，具有简化的串口设置，传输速率的设置等功能，适宜于串口功能的测试。(The program is a serial data receiving process, with a simplified set of serial port, transfer rate settings, such as features, functions suitable for serial testing.)

void swap1(int x, int y) //值传递 void swap2(int *px, int *py) //指针传递 void swap3(int &x, int &y) //引用传递 的使用(void swap1(int x, int y) //值传递 void swap2(int*px, int*py) //指针传递 void swap3(int &x, int &y) //引用传递 的使用)

OPNET软件自带的General Tutorial中文译版，学习OPNET非常实用!(OPNET software s own version of Chinese Translation General Tutorial, learning OPNET very useful!)

OMRON FINS 串口 以太网通讯协议软件原代码(OMRON FINS Ethernet serial communications protocol software, the original code)

该程序实现水声信道的模拟方法及性能分析，提出了一种信的水声信道模型(The program implements underwater acoustic channel simulation methods and performance analysis, presents a letter of underwater acoustic channel model)

modscan32是modbus/tcp以太网通讯调试工工具,如同串口调试助手一样的工具.， (modscan32 is modbus/tcp ethernet communication tools, debugging tools tools like serial debugging aides.)