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实现对数据库添加，修改和删除
数据库为access数据库
实现对数据库添加，修改和删除
数据库为access数据库-of Database add, modify and delete database access database
- 2022-01-22 17:01:21下载
- 积分：1
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写了一个小程序，只是为了和大家一起分享，
写了一个小程序，只是为了和大家一起分享，-Write a small program, but for and share with everyone,
- 2022-03-26 15:29:26下载
- 积分：1
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对linux内核的一个全面的概述性文档，可用作linux kernel的入门引导，而且是中文的。...
对linux内核的一个全面的概述性文档，可用作linux kernel的入门引导，而且是中文的。-right of a comprehensive overview of sexual documents, Linux kernel can be used as the entry guide, but in Chinese.
- 2022-02-14 09:22:10下载
- 积分：1
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可以将任意文件转化为bat的东西，详细内容参见源码
可以将任意文件转化为bat的东西，详细内容参见源码-Arbitrary files can be converted into bat things, the details see the source code
- 2022-01-21 02:04:37下载
- 积分：1
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一个类结构，非常实用的工具，在RPG游戏和战略游戏中，经常需要角色自动根据地图寻找最短路径绕过建筑物...
一个类结构，非常实用的工具，在RPG游戏和战略游戏中，经常需要角色自动根据地图寻找最短路径绕过建筑物-A class structure, a very useful tool, in the RPG games and strategy games, role often need to automatically map to find the shortest path to bypass the building
- 2022-05-14 20:59:10下载
- 积分：1
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Read this to understand basics about software testing.
Read this to understand basics about software testing.
- 2022-01-26 07:56:24下载
- 积分：1
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This is the phone number of terms commonly used abbreviations, very useful.
本文是手机上常用的一些术语的缩写，很有用。-This is the phone number of terms commonly used abbreviations, very useful.
- 2023-04-22 19:50:03下载
- 积分：1
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每个人都有自己的长处,希望大家一起分享,还有,大家互相学习....
每个人都有自己的长处,希望大家一起分享,还有,大家互相学习.-Everyone has their own strengths, I hope to share with everyone, there are, everyone learn from each other.
- 2023-03-29 09:40:03下载
- 积分：1
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实现简单的MIMO
实现简单的MIMO-OFDM系统性能仿真-Realize a simple MIMO-OFDM system performance simulation
- 2022-02-28 13:40:07下载
- 积分：1
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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...
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.
- 2022-03-22 23:04:03下载
- 积分：1
