针对整数倍频偏会造成OFDM码元序列的循环移位而导致系统性能下降的问题，提出一种新的OFDM整数倍频偏的频域估计算法。利用一个OFDM码元中各子载波上数据符号之间的差分关系和最大似然（ML）估计理论，导出了该整数倍频偏的ML估计器的估计公式。新算法在不增加算法复杂度的条件下，频偏估计性能优于传统方法。
2023-03-02 14:36:01
189KB
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硬件描述语言的标准，开发FPGA用，可以用作查找、学习手册。现在的处理器芯片以及各种数字芯片的开发可以预先采用FPGA进行开发，再进行芯片的专门制作。
2023-02-27 21:51:21
5.32MB
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（5个部分，都在这里http://shunruo.download.csdn.net/）
这是一本在Amazon被评为4星级的图书，值得下载一读。
图书信息：
Paperback: 888 pages
Publisher: Sams (August 18, 2006)
Language: English
ISBN-10: 0672328194
ISBN-13: 978-0672328190
Product Dimensions: 9 x 7 x 2.1 inches
Shipping Weight: 3 pounds (View shipping rates and policies)
Average Customer Review: based on 8 reviews. (Write a review.)
Amazon.com Sales Rank: #15,625 in Books (See Top Sellers in Books)
图书简介：
Microsoft Visual Studio 2005 Unleashed is a deep dive into the Visual Studio 2005 tool. Specifically, it will provide you with solid guidance and education that will allow you to squeeze the ultimate productivity and use out of the Visual Studio 2005 development environment. This book folds in real-world development experience with detailed information about the IDE to make you more productive and ease transition from other development environments (including prior versions of Visual Studio). This book will also help you increase team collaboration and project visibility with Visual Studio Team Systems and it will give you straight, to-the-point answers to common developer questions about the IDE.
章节内容：
Code Viewers, Explorers, and Browsers
Refactoring Code 8
Writing ASP .NET Applications
Defining Standards and Practices
Introduction to Visual Studio Team System
Work Item Tracking
Unit and Load Testing
图书信息：
Paperback: 888 pages
Publisher: Sams (August 18, 2006)
Language: English
ISBN-10: 0672328194
ISBN-13: 978-0672328190
Product Dimensions: 9 x 7 x 2.1 inches
Shipping Weight: 3 pounds (View shipping rates and policies)
Average Customer Review: based on 8 reviews. (Write a review.)
Amazon.com Sales Rank: #15,625 in Books (See Top Sellers in Books)
图书简介：
Microsoft Visual Studio 2005 Unleashed is a deep dive into the Visual Studio 2005 tool. Specifically, it will provide you with solid guidance and education that will allow you to squeeze the ultimate productivity and use out of the Visual Studio 2005 development environment. This book folds in real-world development experience with detailed information about the IDE to make you more productive and ease transition from other development environments (including prior versions of Visual Studio). This book will also help you increase team collaboration and project visibility with Visual Studio Team Systems and it will give you straight, to-the-point answers to common developer questions about the IDE.
章节内容：
Code Viewers, Explorers, and Browsers
Refactoring Code 8
Writing ASP .NET Applications
Defining Standards and Practices
Introduction to Visual Studio Team System
Work Item Tracking
Unit and Load Testing
2023-02-25 17:16:17
9.02MB
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叙述了三相电热式家庭水暖恒温控制系统的设计思路、PID调功控制的工作原理、硬件结构、软件实现方法、控制对象模型的建立与参数的整定、系统实际投运的数据结果。系统采用MCS 51系列单片机、串行A/ D转换器0832和高精度数字温度传感器18B20构成具有电压前馈的单回路闭环控制系统,主要创新点是采用固态继电器取代现有系统所用的有触点机械控制开关,用 PID控制器取代原系统的开关控制,实现了无噪声高精度的控制。实验结果表明,该方法硬件成本低,控制精度高,抗干扰能力强,技术实施方案简单易行、实用并具有通用性,满
2023-02-23 00:46:50
687KB
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利用各向异性扩散滤波模型对图像进行平滑的过程中，迭代停止准则对图像平滑的效果有着重要的影响。本文提出了一种简单实用的最优停止准则，该准则确定了一个标准，使得平滑后的图像与噪声的相关性最小时停止迭代。它易于实现而且有很强的通用性。实验结果表明该算法可以在图像平滑过程中适时地停止迭代，获得满意的图像平滑效果。
2023-02-22 20:25:06
328KB
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测绘资料-全球导航卫星系统连续运行参考站网建设规范CHT_2008-2005.pdf
2023-02-15 11:15:50
1.7MB
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本文对MODIS数据进行了处理和分析，探讨了利用MODIS数据提取渤海海冰信息的方法，得到三个不同时相的海冰分布情况。研究结果表明，利用MODIS提取的海冰纹理很清楚，可以很好的刻画出海冰的外缘线及冰块之间的缝隙。因此，利用MODIS准确监测海冰的分布及其面积变化是十分可行的。
2023-02-13 22:25:14
474KB
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SQL Server 2005 清华大学 课件 PPT 很有条理，个人觉得很不错，希望对大家有用
2023-02-12 17:50:00
5.71MB
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