labwindows USB 数据采集卡程序

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.

一个非常简单的贪食蛇游戏，下载时在文件夹下添加两个名为Begin和DeTmixBW得波形音频文件就能有背景音乐-A very simple Snake game, download folder when adding two named Begin and DeTmixBW wave audio file will be able to get background music

张勇的linQ学习P2P及IM软件的极佳素材代码-Zhang Yong, the peer-to-peer learning and IM excellent source material

算法实现题 最长公共子序列问题 给定两个序列 X = { x1 , x2 , ... , xm } Y = { y1 , y2 , ... , yn } 求X和Y的一个最长公共子序列 举例 X = { a , b , c , b , d , a , b } Y = { b , d , c , a , b , a } 最长公共子序列为 LSC = { b , c , b , a }-Algorithm to achieve the longest common sub-title sequence of the problem given two sequences X = (x1, x2, ..., xm) Y = (y1, y2, ..., yn) for X and Y, a maximum common substructure sequence, for example X = (a, b, c, b, d, a, b) Y = (b, d, c, a, b, a) the longest common sub-sequence for LSC = (b, c, b, a )

基于gpu的体绘制程序源代码，包含所有链界库，绘制效果很好。-GPU-based volume rendering program source code, contains all the chain community library, drawing well.

简单的分层管理的库存管理及查询软件，供大家交流用。-simple hierarchical management and inventory management for software used for the exchange.

VB版推箱子,一个全屏显示的推箱子游戏，只能在800*600屏幕分辩率下运行。-VB version of RSS, a full-screen viewing of the games, only 800* 600 screen Resolution running.

操作系统实验，编程实现进程的调度，基于时间便轮转的算法！-Operating system, experiment, programming process, scheduling, time-based rotation algorithm will be!

扫雷 有初中高三个级别 而且做了一个数据文件 可以保存玩时的数据 下次玩可以从中断处开始 很方便-Mine has three levels of junior high, and made a data file can be saved to play the next play when the data can be easily interrupted at the beginning

玩过泡泡堂的人一定会喜欢这款简单的投篮游戏，游戏模式跟NBA2004差不多，没玩过的人应该也能很快摸索出游戏方法吧！-played Bubble Hall of people will like this simple shot, games basket with 8.2 model with almost no people should be played and will be able to explore ways the game!