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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
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可以实现一些高精度，超出CPU所能一次运算的数，实现任意数值长度的运算。...
可以实现一些高精度，超出CPU所能一次运算的数，实现任意数值长度的运算。-Can achieve a number of high-precision, beyond the CPU can be a number of operations, realization of arbitrary length numerical computing.
- 2022-03-13 14:15:55下载
- 积分：1
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手机游戏：雷电的遗址，画面精彩，运行流畅！
手机游戏：雷电的遗址，画面精彩，运行流畅！-mobile games : lightning sites, wonderful picture, running smooth!
- 2023-03-17 20:35:04下载
- 积分：1
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对于先进的几何形状，大多数应用程序将更喜欢加载前
For advanced geometry, most apps will prefer to load pre-authored
meshes from a file. Fortunately, when using meshes, D3DX does most of
the work for this, parsing a geometry file and creating vertx buffers
for us. This tutorial shows how to use a D3DXMESH
object, including loading it from a file and rendering it. One thing
D3DX does not handle for us is the materials and textures for a mesh,
so note that we have to handle those manually.
- 2022-05-26 16:23:51下载
- 积分：1
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硬件控制程序，简单 仅供参考
硬件控制程序，简单 仅供参考-hardware control procedures, simple is for reference only
- 2022-02-16 01:43:33下载
- 积分：1
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Nobel Prize Winner's Paper
Nobel Prize Winner s Paper-Nobel Prize Winner"s Paper
- 2023-03-06 19:40:03下载
- 积分：1
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用VB来做出的学籍管理系统 ！
用VB来做出的学籍管理系统 ！-Using VB to make the school management system!
- 2022-09-24 01:30:03下载
- 积分：1
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The first 78 cases to 89 cases of the first chip is a complete description of th...
第78例到第89例是一个芯片完整描述的各个部分,但是
它们的源描述所使用的包的源描述超过了演示版限制的300行,
目前不能进行编译与模拟,
如果您需要对其进行编译与模拟,请与北京理工大学
ASIC研究所联系,获取Talent系统的完全版本.
联系方法:-The first 78 cases to 89 cases of the first chip is a complete description of the various parts, but they used to describe the source of the packet
- 2022-09-15 19:00:03下载
- 积分：1
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在对话框程序中插入DialogBar!希望对各位做界面方面有帮助！ 希望对各位做界面方面有帮助！...
在对话框程序中插入DialogBar!希望对各位做界面方面有帮助！ 希望对各位做界面方面有帮助！-in the dialog box procedure to insert DialogBar! Do you want to help interface ! Do you want to help interface!
- 2022-04-09 14:39:36下载
- 积分：1
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这是一个用c++编写的扫雷游戏，希望大家能提出意见
这是一个用c++编写的扫雷游戏，希望大家能提出意见
-used to prepare the mine c game, I hope you will express their views
- 2022-03-09 20:38:34下载
- 积分：1
