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  1. 编程语言:PDF
  2. 代码类别:行业发展研究
  3. 发布时间:不限
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1. GDBSCAN

  research paper on bdscan

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129
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2013-01-31发布

2. top_tides

  《浪潮之巅》,作者:吴军,很好的书,写了AT&T、IBM、苹果、英特尔、微软、思科、雅虎、惠普、摩托罗拉等IT巨人的兴衰起落,很有意思!(Summit of the " wave" , author: Wu Jun, a good book, write the rise and fall of the ups and downs of the IT giant AT & T, IBM, Apple, Intel, Microsoft, Cisco, Yahoo, Hewlett-Packard, Motorola, very interesting!)

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93
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2012-11-30发布

3. UAVsLMDSsystems

  介绍基于LMDS的无人机空中中继链路设计,对研究无人机通信有帮助(UAV data link)

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113
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2012-08-29发布

4. 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 )

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99
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2012-05-20发布

5. Energy-Detection-of-Unknown-Deterministic-Signals

  most important paper in energy detection and alla paper refer to it

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100
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2012-05-16发布

6. Wireless-coverage-market-

  无线覆盖市场月度监测报告、行业发展报告文件(monthly monitoring report)

3
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127
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2012-03-05发布

7. Real-time-detection-of-negative

  同相牵引供电系统旨在实现电能质量的综合补偿。提出了一种基于同步坐标变换的电流检测方法,能实时准确地检测 出负载电流的基波正序有功分量、基波正序无功分量、基波负序分量以及谐波分量,为综合补偿提供了基础。电能质量的补 偿力度与设备容量之间存在非线性关系。提出补偿度的概念,并给出补偿度与电能质量参数的关系,通过给定电能质量期望 参数,实时调整负序、谐波以及无功补偿度,使得综合潮流控制器容量在各电能质量补偿参数之间得到实时优化配置,从而 实现同相供电系统容量优化满意补偿。理论推导和仿真结果验证了所提方法的正确性和可行性。(The cophase traction power supply system aims at achieving power quality comprehensive compensation.A current detection method based on synchronous reference frame transformation is proposed.The method can decompose the load current real-timely into fundamental positive-sequence active component,fundamental positive-sequence reactive component,fundamental negative-sequence component and harmonic component,which lays a foundation for comprehensive compensation.There are nonlinear relation between compensation strength of power quality and device capacity.The paper proposes the concept of compensation degree and gives the relationship between compensation degree and power quality parameters.By giving expected power quality parameters,it adjusts compensation ratios of negative,reactive and harmonics instantaneously,so that the IPFC capacity can be allocated between power quality compensating parameters optimally and real-timely,thus achieving capacity optimal satisfactory compensa)

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2012-03-01发布

8. Study-of-VSC-HVDC-Controller-

  风电潮流的波动会引起并网系统公共连接点(PCC)电压的波动。在基于电压源换流 器的高压直流输电(VSC-HVDC)交直流混合风电场并网系统中,控制VSC-HVDC 送端站注入 到PCC 点的无功功率可以抑制电压波动。本文讨论了VSC-HVDC 的无功功率控制器和定电压控制 器抑制电压波动的原理。基于电磁暂态软件PSCAD/EMTDC 建立了并网风电场模型、VSC-HVDC 模型及控制系统模型。仿真结果表明VSC-HVDC 采用定电压控制器的并网系统能更好的抑制电 压波动,采用无功功率控制器的系统具有较好的风电场并网性能。(Reactive power variation of integration wind farm may cause point of common coupling (PCC) voltage fluctuation. In hybrid wind farm integration system based on HVDC of voltage source converter (VSC-HVDC), the voltage fluctuation can be alleviated by compensating reactive power to PCC from VSC-HVDC sending end. Therefore, the reactive power controller and the stable voltage controller to alleviate voltage fluctuation are studied in the paper. The integration wind farm, VSC-HVDC and their controller models are set up by PSCAD/EMTDC. The simulation results show that the integration system adopted stable voltage controller has a better performance to alleviate voltage fluctuation. However the system adopted reactive controller has a good wind farm integration capability.)

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2012-03-01发布

10. 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)

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105
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2011-09-17发布

11. hppv_p3_t1_hudson

  德国一家公司介绍光伏逆变器低电压穿越的资料,通过实例进行讲解(German company introduced low-voltage across the PV inverter data, to explain by example)

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124
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2011-09-15发布

12. load-class

  针对当前负荷建模研究和工程应用中存在的问题,研究了负荷特性的分类综合方法(For the current load modeling research and engineering application problems, the classification of the load characteristics of an integrated approach)

10
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131
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2011-09-01发布

13. etrij.apr2010.0241

  This document is: Performance Evaluation of Service-Aware Optical Transport System. They propose and experimentally demonstrate a service aware optical transport system. The proposed service aware optical transport system makes a flow based on service type and priority of traffic.

2
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93
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2011-08-30发布

14. raley-slection

  中继选择方案的研究。一种新的中继选择方式——机会中继。(Research of Relay options schemes A new way of relay selection- opportunities to relay )

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104
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2011-05-06发布

15. 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)

0
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74
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2011-01-06发布

16. 4kWbianxieshizhinengxudianchi

说明:  4kw便携式蓄电池的研究,对便携式的开发具有很好的指导意义,欢迎下载交流。(4kw portable battery research on the development of portable has a good guide, welcome to download the exchange.)

0
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98
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2010-03-31发布

17. NEFCLASS

  This document explains the NEFCLASS. NEFCLASS is a Neural Fuzzy Classification model. Mainly used for the classification of data.

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86
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2009-10-09发布

18. LiteratureReview

  Literature Review on Linguistic Fuzzy Neural Models. It can be very useful for Fuzzy Nural network based application.

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116
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2009-10-09发布

19. MS

说明:  C# development book very helpful

0
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81
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2009-10-05发布

20. CodewarriorProcExpert

  Codewarrior Proc Expert专家系统应用资料(Codewarrior Proc Expert Expert System Application Data)

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108
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2008-07-16发布