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LTE-MIMO-OFDM
一篇西安电子科技大学的博士论文《LTE中MIMO_OFDM系统物理层关键技术研究》，作者李文刚，关键词：多入多出 多用户 MIMO 空时编码 功率分配 波束赋形(Xidian University, a doctoral thesis " LTE physical layer system in MIMO_OFDM key technologies" , author Liwen Gang, Keywords: Multiple Input Multiple Output Multi-user MIMO space-time coding beamforming power allocation)
- 2011-09-15 10:24:10下载
- 积分：1
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mmwave-beamforming
The ever growing traffic explosion in mobile
communications has recently drawn increased
attention to the large amount of underutilized
spectrum in the millimeter-wave frequency bands
as a potentially viable solution for achieving tens
to hundreds of times more capacity compared to
current 4G cellular networks. Historically,
mmWave bands were ruled out for cellular usage
mainly due to concerns regarding short-range
and non-line-of-sight coverage issues. In this
article, we present recent results channel
measurement campaigns and the development of
advanced algorithms and a prototype, which
clearly demonstrate that the mmWave band may
indeed be a worthy candidate for next generation (5G) cellular systems
- 2015-02-11 14:56:44下载
- 积分：1
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1
说明： this document may be good for you,
finding detecting object
- 2011-04-02 10:36:44下载
- 积分：1
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BeiDou-ICD
北斗卫星导航系统空间信号接口控制文件，这是正式版(BeiDou Navigation Satellite System Interface Control Document)
- 2013-03-29 16:13:51下载
- 积分：1
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wave-induced-fluid-flow
阐述速度频散和衰减现象基本特征的基础上，回顾Biot模型、喷射流模型、BISQ模型、双孔模型、裂缝－孔隙微结构模型和斑块饱和模型等6种主要速度频散与衰减理论模型的研究进程、原理和限制性，利用示意图直观地描述了这些模型的机制，并给出了它们各自的高低频极限、特征频率和适用条件。(Expounded velocity dispersion and attenuation of the basic characteristics of the phenomenon based on a review Biot model, jet stream model the, BISQ model, two-hole model, crack- pore microstructure model and plaque saturated model 6 speed dispersion and attenuation of the theoretical model the research process, principle and restrictive, the use of the schematic diagram of intuitive mechanism described in these models, and gives their respective high and low frequency limits, the characteristic frequency and the applicable conditions.)
- 2012-11-26 19:14:04下载
- 积分：1
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xipeline__pseudo
本协议名叫动态TDMA时隙分配协议,使用在移动无线自组织网协议的实现()
- 2018-04-20 23:44:23下载
- 积分：1
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08-08
Commercial Sensor Survey Status Report
- 2009-10-30 17:48:21下载
- 积分：1
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Design_Of_Charge_Controller_Using_MPPT_A
he energy generated using a photovoltaic (PV) are depends mainly on meteorological factors such as temperature and solar radiation. Considering the high cost and the low efficiency of a PV system, it must operate at maximum power point (MPP) which changes with the load variations and weather conditions. This article presents the conception of a nonlinear controller for the DC-DC converter to retrieve a maximum power from photovoltaic systems (PV). This is affected via the control of duty cycle of the converter. The backstepping control is used to design the controller. The incremental conductance algorithm provides the output reference voltage PV to the backstepping controller. An integral Action is added in order to render the controller robust against changes of parameters and perturbations. The proposed controller performance is assessed by numerical simulations under changing atmospheric conditions(efficiency of a PV system, it must operate at maximum power point (MPP) which changes with the load variations and weather conditions. This article presents the conception of a nonlinear controller for the DC-DC converter to retrieve a maximum power from photovoltaic systems (PV). This is affected via the control of duty cycle of the converter. The backstepping control is used to design the controller. The incremental conductance algorithm provides the output reference voltage PV to the backstepping controller. An integral Action is added in order to render the controller robust against changes of parameters and perturbations. The proposed controller performance is assessed by numerical simulations under changing atmospheric conditions)
- 2020-06-23 01:00:01下载
- 积分：1
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IEC103study
IEC103规约应用的知识要点文档，对学习iec103协议的人帮助很大(IEC103 application of the knowledge elements of the Statute of the document, to learn iec103 agreements were of great help to)
- 2021-04-22 10:48:49下载
- 积分：1
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USB2CAN
usb to can ，can测试，c语言源码，可以做产品(usb to can, can test, c language source code, you can make the product)
- 2014-09-11 11:13:40下载
- 积分：1
