-
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
-
Advances.of.Research.in.Independent.Component
:介绍了独立成分分析(ICA)的基本模型及其假设、含混性、非高斯性度量和通用求解过程。讨论了目前ICA 的几个研究方向的发展现状和面临的问题,分析了ICA 基本模型和几种扩展模型的求解算法,包括盲反卷积、卷积混和的盲分离、非线性瞬时混合的盲分离。提出了ICA 未来理论和应用研究中的开放课题。(: Introduce the independent component analysis (ICA) the basic model and its assumptions, vague, non-Gaussian measurement and GM solving process. Discussion of the current ICA several research directions of the development of the current situation and the problems faced by an analysis of the basic ICA model and several extended model algorithm, including the blind deconvolution, convolution mixture of blind source separation, nonlinear transient mixed Blind Source Separation. Proposed ICA future theoretical and applied research topics in the open.)
- 2008-04-17 10:19:25下载
- 积分:1
-
1FISTA
半二次优化算法,研究。软阈值公式推导。最早的一篇论文。非常有参考价值。(Half-quadratic optimization algorithms, research. Soft threshold formula derivation. The earliest paper. Very valuable reference.)
- 2013-10-06 14:12:40下载
- 积分:1
-
OptiXiManagerT2000(SDH)
OptiXiManagerT2000(SDH).rar (OptiXiManagerT2000(SDH).rar )
- 2009-03-25 11:43:08下载
- 积分:1
-
za
说明: 文件主要介绍了一种叫做数学形态学的方法及其应用,数学形态学多数应用在图像处理方面,现已有资料应用于信号处理领域(Paper introduces a method called mathematical morphology and its applications, most applications of mathematical morphology in image processing, data is now used in signal processing)
- 2011-01-06 13:06:48下载
- 积分:1
-
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
-
User-Experience-Case-Study
互联网产品用户体验案例分析,帮助提高用户体验。(Internet product user experience case studies to help improve the user experience.)
- 2013-08-20 15:57:34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
-
Poster_2
This is a research paper and a poster on occlusion detection....was part of an Msc thesis.
- 2009-07-03 01:19:17下载
- 积分:1
-
RNP
民航精密导航技术,对民航导航感兴趣的同学可以看一下(Civil Aviation precision navigation technology, can look at students interested in civil aviation navigation)
- 2013-04-12 14:38:10下载
- 积分:1