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气动布局调研
说明: 飞行器的气动布局介绍及相应气动布局的优缺点。(Introduction to the aerodynamic layout of the aircraft)
- 2020-04-06 20:17:24下载
- 积分:1
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(189021)
心电监护仪行业“十二五”规划分析与投资前景预测研究报告(189021).pdf(ECG industry " 12th Five-Year Plan and investment prospects forecast research report (189 021). Pdf)
- 2012-08-14 15:18:42下载
- 积分:1
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云计算战略思考
互联网公司通过改良传统中间件或改进设计架构使其具备分布式能力,同时使用了新兴的采用分布式思路设计的大数据中间件等方案,让应用系统具备了支撑弹性扩展、高并发、海量数据、高可靠业务的能力,并大大缩短业务的上线和更新周期。(Strategic thinking of cloud computing)
- 2017-11-17 21:36:40下载
- 积分:1
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optimized_datacenter_cloud
Towards an optimized abstracted topology design in cloud environment
- 2019-01-19 09:08:26下载
- 积分:1
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A-new-memetic-algorithm-approach-for-the-price-ba
memetic algorthium in the distributed generation enivorment
- 2013-09-01 00:47:10下载
- 积分:1
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kd
说明: Справка по дельфи
на русском языке
- 2009-10-12 17:55:59下载
- 积分:1
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Technical-Guide120
areva alstom relay type p120 tecnical documentation
- 2011-05-14 15:04:06下载
- 积分:1
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fx
说明: 飞行学院信息化建设的探讨与总结,希望对别的学校有所帮助(Flight School information construction discussion and conclusion, want to help other schools)
- 2009-10-16 10:50:25下载
- 积分:1
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Sparsity-Inducing-DOA
基于稀疏分解的宽带信号DOA估计方法,使用了基于贝叶斯的方法具有良好的估计精度和分辨率(Wideband signal sparse decomposition DOA estimation method based on the use of a method based on Bayesian estimation has good accuracy and resolution)
- 2014-09-26 21:25:20下载
- 积分:1
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biyesejitognxinxitong
中文摘要
正交频分复用( OFDM , Orthogonal Frequency Division
Multiplexing)是当前一种非常热门的通信技术。它即可以被看作是一种
调制技术,也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱
利用率高的特点,因此被广泛应用于高速数字通信领域,比如应用于IEEE
802.11a无线局域网(WLAN)的物理层等等。
我的毕业设计的核心任务是:采用 FPGA 来实现一个基于OFDM 技术
的通信系统中的基带数据处理部分,即调制解调器。其中发射部分的调制
器包括:信道编码(Reed-Solomon 编码),交织,星座映射,FFT和插
入循环前缀等模块。我另外制作了相应的解调器,可以实现上述功能的逆
变换。
另外,我还对OFDM技术, IEEE 802.11a的标准文献,基于Simulink
的 OFDM 模型和仿真,ALTERA 公司的技术和 IP Core 的使用等方面进
行了研究。这些在文章中都有体现。
(Abstract
Orthogonal frequency division multiplexing (OFDM, Orthogonal the Frequency Division,
Multiplexing) is a very popular communication technology. It can be seen as a
Modulation technique can also be seen as a multiplexing technique. Because of its resistance to multipath fading and spectrum
High utilization characteristics, and is widely used in high-speed digital communications, such as used in IEEE
802.11a wireless LAN (WLAN) physical layer.
The core mission of my graduation project: FPGA to implement a technology based on OFDM
Communication systems in baseband data processing part, ie the modem. These emission part of the modulation
Includes: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and interpolation
Into the cyclic prefix modules. I also produced a corresponding demodulator can achieve the inverse of the above functions
Transformation.
In addition, OFDM technology, the IEEE 802.11a standard literature, based on Simulink
)
- 2012-05-20 21:58:18下载
- 积分:1