-
Spatial-Modulation
spaital modulation是08年开始盛行的一种空间调制技术,他相比于v-blast,mrc等方式有了长足的进步。(Spatial modulation (SM) is a recently developedtransmission technique that uses multiple antennas.)
- 2012-04-26 12:09:32下载
- 积分:1
-
Boltzmann-Modeling-for-Engineers
工程领域中的格子波尔兹曼方法,很经典的书籍,内含较多的代码(Engineering fields Lattice Boltzmann Method, classic books, containing more code)
- 2020-07-04 01:00:01下载
- 积分:1
-
c++典型工控应用编程实例
说明: 全面、系统地介绍了工业控制典型应用系统。供自动化、计算机应用等专业学生参考(Typical application systems of industrial control are introduced comprehensively and systematically. For the reference of students majoring in automation and computer application)
- 2019-05-27 10:24:07下载
- 积分:1
-
工程领域中的格子波尔兹曼方法
工程领域中的格子波尔兹曼方法,很经典的书籍,内含较多的代码(Engineering fields Lattice Boltzmann Method, classic books, containing more code)
- 2020-07-04 01:00:01下载
- 积分:1
-
Applying-Power-Battery--in-Grid
通过动力电池参与电网调峰应用分析,论述电动汽车动力电池移动储能技术应用优势、可行性和基本
系统模型,为今后的研究提供参考
(In this paper, the application ofpowerbatteries for the peak regulation in gridwas analyzed. The advanta-
ges, feasibilities and basic system model of the mobile energy-storage technology were discussed, which provided
some references for further research.
)
- 2011-08-10 11:14:03下载
- 积分:1
-
123456789
中国中小企业互联网应用状况调杳报告:
近几年,中国互联网应用市场一直保持着快速发展,在国民经济中的地位不断提升。一
方面,个人的互联网应用市场不断发展,截至2010年末中国网民规模已达4.57亿;另一方
面,企业的互联网应用市场也逐渐步入成熟,继企业内部信息化之后,互联网成为企业发展
的又一强劲推力,互联网已经被广泛应用于企业的营销销售、客户服务、办事办公等方面。(The Chinese small and medium-sized enterprise Internet application status of the report were: In recent years, China s Internet application market has been maintained a rapid development of the national economy of stature. a , personal Internet application market development, at the end of 2010 the scale of China s netizens has reached 457 million The other party Surface, enterprise Internet application market also gradually into mature, the enterprise internal information after, the Internet becomes the development of the enterprise And a strong thrust, the Internet has been widely used in enterprise)
- 2011-12-23 11:10:53下载
- 积分:1
-
MS
说明: C# development book very helpful
- 2009-10-05 19:49:37下载
- 积分:1
-
BigTable
BigTable cloud coumputing data storage
- 2009-09-13 13:18:18下载
- 积分:1
-
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
-
cr0
提出了一种认知无线网络的异构网络融合的研究方案。该方案采用了具有可重构能力的基站设备和多频段多模式终端设备 , 采用复用的方式来达到多频段变换的目的 , 并最终提高无线资源利用效率。以中间件的方式来实现各种通信模式的融合和切换 , 并设计了基站分布式天线 , 来满足更大的负载或更
高的业务质量需求。建立了一个基于软件无线电的终端系统 , 该终端的优点在于其可以工作在多个频段之上 , 并且可以自适应的工作在多种不同模式的网络中。(cognitive wireless networks in)
- 2011-09-17 12:37:11下载
- 积分:1