主要用于考试报名时，区位码转换。

本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.

一个关于LabVIEW的pwm程序,还没有最终完成-pwm

全套ACE核心代码,用于TCPIP通讯,经过多次整理,已经应用于成熟产品-ACE full set of core code for TCPIP communication, through a series of sorting has been applied to a mature product

C++程序供初学者使用-C program for beginners

VB实现的排雷程序 ,大体功能同windows自带的游戏相同,推荐初学VB的朋友-VB mine procedure, generally with the functions of Microsoft"s Windows game the same and recommend that when a friend VB

IC卡读写 IC卡读写 -IC Card Reader IC Card Reader IC Card Reader

这是关于三级网络技术的很有用的，用C语言开发的-This is on the three network technology useful to the C language development

用作pT100温度传感器的前端电路，原理可以从网上搜索相关文章，谨此以期达到抛砖引玉的效果-Pt100 temperature sensor for the front-end circuit, the principle can be from the Internet search-related articles, start with these to achieve the effect of

有关字符处理及获取机器日期的一些源程序- Related character processing and gain machine date some source programs

在当今,流行的编程软件种类繁多，它们编程方便、易于维护，但是在与硬件直接打交道和编制系统软件时却束手无策，于是C语言就有了用武之地。C语言作为汇编语言与高级语言之间的一种过渡语言，兼有汇编语言的高效和高级语言的方便。 　　在通讯中，为了保证行运安全可靠，标准的串行口必须具有许多握手信号和状态信息。这是因为通讯的各个计算机CPU速度不一样（这会导致“错帧”）以及发送机发送数据速度比接收机接收速度快（这会导致“过冲”）。为解决这个问题，我们采用一个简单的握手信号，即发送机每次仅发送半个字节（低4位）的数据，而另外半个字节（高4位）则用来传送信息。我们可以对信息位（高4位）进行如下简单的编码：-today, the popularity of the wide variety of software programming, is easy to maintain, but to deal directly with the hardware and system software when compiled a loss, so there will be a C language battlefield. C language as the compilation and Advanced Language a transition between languages, both assembly language and the efficient high-level language convenience. In telecommunications, in order to ensure safe and reliable transport firms, the standard serial I must have shook hands with many signals and state information. This is because the various computer communications CPU speed is not the same (this would lead to "the wrong frame") and transmitter to send data faster than fa