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Effect-of-standardized-resource-
本文是研究教学资源标准化建设的相关研究,值得大家学习研究!(Effect of standardized resource construction on computer technologybased teaching results)
- 2011-05-11 10:19:32下载
- 积分:1
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MOPSO-WSN_code-master
说明: PSO protocole for wsn
- 2020-08-09 07:12:17下载
- 积分:1
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Worse-is-Better.pdf
本文通过对LISP语言发展的研究,总结出计算机方面的设计理念。并不是完美的才是最好的,有时候愚蠢的简单的更好。(Based on the LISP language development research, summed up the computer aspects of the design philosophy. Not perfect is the best, and sometimes stupid simple better.)
- 2013-10-29 15:19:04下载
- 积分:1
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SAR
说明: SAR图像斑点噪声抑制方法与应用研究,里面给出里处理Sar
影像的算法(SAR image speckle noise reduction methods and applied research, which is given to deal with Sar Imaging Algorithm)
- 2008-12-04 16:43:54下载
- 积分:1
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H6-inveter
提出一种新颖的高效率六开关逆变器(H6)拓扑,解决了无变压器单相光伏并网逆变器漏电流问题。 仿真与实验验证了该拓扑具有低共模电压、高质量的并网波形和高效率特征(This paper proposed a novel, high efficiency, transformerless single phase photovoltaic grid-connected inverter with six active switches that alleviate leakage current
issue. This topology embeds two unidirectional freewheel units
into the midpoint of a full bridge inverter, which provide novel freewheel paths and separate battery cells a grid during freewheeling time. )
- 2020-10-27 09:59:59下载
- 积分:1
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AARMM7zipR
一种基于ARM7的便携式式心电监护仪及心电分析的研究
(An analysis based on the ARM7-portable ECG and ECG)
- 2012-07-26 22:08:45下载
- 积分:1
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exgra1
求解变分不等式的两种外梯度算法对比。包括一种修正的外梯度法及其优化方法。(Solving Variational Inequality gradient algorithm for comparison of two things. Including an amendment to the outer gradient method and its optimization.)
- 2009-11-19 13:59:26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
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AdvancedComponentDevelopment
最近在弄GIS二次开发,附件是组件开发教程,希望有用。(Advanced Component Development Tutorial)
- 2010-03-02 17:58:14下载
- 积分:1
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Patent2011101668011
电力线载波通信发送电路专利,包括权利要求书、说明书、摘要等(dian li xian zai bo tong xin fa song dian lu zhuan li)
- 2017-05-10 14:23:44下载
- 积分:1