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哈希表设计 针对某个集体（比如你所在的班级）中的“人名”设计一个哈希表，使得平均查找长度不超过R，完成相应的建表和查表程序。
采用除留余数法构建哈希表，伪散列解决冲突 内有实验报告，通过vc++测试，我们小组做这个得了满分！
- 2020-06-17下载
- 积分：1
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360环视摄像头鱼眼四摄像头拼接算法
用于鱼眼摄像头的一个环视参考文档很不错，自己最开始做这个相关的项目就是参考这个文档，发现写的很是不错，非常值得参考特别有用的，哈哈哈哈哈哈哈哈哈哈赵三峰,谢明,陈玉明:基于逆向投影的全景泊车系统设计与实现其中,(x,y)表示校正图像的坐标,(x,y)表示鱼眼图像的坐标此算法的效果如图所示。1------图校正前后图像俯视变换clay.OB图离散化后的路面本文采用直接线性变换()来找到俯视变换的投影矩阵,这种方法的优点在于不需要知道摄像头视RR角等参数,只需要在图像坐标系下标定对特征点就可R以计算出个未知的参数,从而得到单应性矩阵,并利R用单应性矩阼完成俯视变换。其中,M表示合成图像的宽度,单位:像素;No表示直接线性变换的公式如下合成图像的高度,单位:像素;R表示合成区域的宽Coxi i+Coli+Cu22i +Cu3)度,单位:;R1表示合成区域的长度,单位(iam,0)表示图像的坐标,单位:像素;x,y表示合成区C102+(ny2+C12x;+CrC20x:+C21y+C2231+1)域路面的坐标,单位:。下面判断路面上的点被哪个摄像头拍到,因此将路其中,(2v)表示图像坐标,(xy2)为物体空间坐标,面分成八个区域,如图所示Co,co1,…,C2为未知参数。但是本文的物体选择的是路面特征点,因此公式的z=0,简化后的二维公式为:(左前前)(右前)IX). Ti t Coli+CUsC0x;+C21y;+1(左)汽车v C1o x, +C11)2+C13C20x:+C21y1+1如果川矩阵的形式表示,如下(左后)(后)(右后)ROT=C1C1 CI图路而的八个区域图中,Il、ⅣV、V和ⅤI四个区域只能被前,左,RO表示路面坐标到图像左边的变换矩阵,则ROn右,后四个摄像头看到。I、I、VI和VI为两个摄像表示图像到路面的投影矩阵头的交叉区域,可能被两个摄像头看到,因此需要判断图像合成交叉区域被哪个摄像头采集到,四个交叉区域的判别方本文的创新点就在于跳出了传统图像拼接的想维,法相同,因此以区域1为例描述如下采用一种更加简单有效的算法来实现无缝拼接全景。)取区域I内任意一点(jo),计算其路面坐标假设路面合成区域的大小为长R1,宽为Rw,单假定该点可以被前摄像头采集到,通过与前摄位:。R的宽度方向平均分成M等份,R1的高像头的投影矩阵ROlo相乘,便可以得到该点在前摄度方向平均分成N等份,其中任意一点坐标用(mm)像头的像素坐标av),如果0≤
- 2020-11-28下载
- 积分：1
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全网最稳定的JAVA彩票合买网站源码彩票系统开发网站APP开发源码
天佐彩票程序系统源代码基于 Java + MySQL 开发，客户端使用 Objective-C + Java 原生开发。部署环境为Linux。支持分布式部署，支持大型彩票网站项目。页面架构采用 ReWriteR技术,以及Ajax 延时加载和网页静态化技术,提升页面加载速度,动态数据采用后加载、延时加载的方式,增强用户体验,降低服务器瞬间并发压力提升整体性能。java语言开发，spring mvc架构oracle数据库，页面程序分离多重审核机制，后台逻辑server接口可快捷接入app、webapp等其他应用。附有程序安装说明、前端demo账户和后台路径、管理账户和密码。
- 2020-11-28下载
- 积分：1
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fpgrowth的python实现
少有的fpgrowth算法的python实现。只要传入数据集，就可计算出频繁模式集。
- 2020-12-07下载
- 积分：1
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运用MATLAB软件的海浪仿真，海浪仿真MATLAB程序
运用MATLAB仿真软件采用海浪经验公式对实际的海浪仿真模拟 以用到实际系统中
- 2020-12-05下载
- 积分：1
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mfc+sql 酒店客房管理系统
C++编程运用SQL数据库实现酒店客房管理系统的基本功能包括查询，修改，更新等……
- 2020-12-01下载
- 积分：1
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Key Technologies for 5G Wireless Systems
5G无线通信系统关键技术（剑桥大学出版社） 2017年出版 对于5G所有最新技术进行了详细说明 很全的工具书Key Technologies for5G Wireless SystemsVINCENT W. S, WONGUniversity of British ColumbiaROBERT SCHOBERUniversity of Erlangen-NurembergDERRICK WING KWAN NGUniversity of New South WalesLI-CHUN WANGNational Chiao-Tung University即CAMBRIDGEUNIVERSITY PRESSCAMBRIDGEUNIVERSITY PRESSUniversity Printing House. Cambridge CB2 SBS. United KindomOne Liberty Plaza, 20h Floor New York, NY I(H0X, USA477 williamstown Road, port Melbourne, yic 3207 australia48424, 2nd Floor, Ansar Rod, Daryaganj. Delhi- I l4XH2, India79 Anson Road, #o6-(/ 00, Singapore 079%MCambridge University Press is part of the Lniversity of CambridgeIt furthers the University s mission by disseminating knowledge in the pursuit ofeducation, leaming and research at the highest international levels of excellence.www.cermbrid吧eInformtiononthistitlewww.cambridgeorg/978110713241810,1017③781316771655C Cambridge University Press 2017This puhlication is in copyright. Subjcct to sututonry exceptionand to the provisions of relewant collective licensing agreementsno reproduction of any part may take place without the writtenpermission of Cutmbridgre University Press.First published 2(117Printed in the United Kingdom by TJ International Ltd. Padstow, CornwallA catalogue recor for this pudlieafiove is aailable fromm the British LibraryLibrary of Congress Cataloging- in Pi hlicaiomz dataNames: Wong, Vincent W.S., editorTitle: Key technologies for 5G wireless systems/edited by Vincent W.S. Wong [and 3 otherOther titles key technologies for five g wireless svstemsDescription: Carmbrisige: New York, NY: Cambridge Lniversity Press, 2017.Identifiers: l CCN 2016045220)1 ISBN 9781 172418 (hardback)Subjects: LCSH: Wireless communication systems, I Machine-to-machinecommunications. Internet of things.Classitication: LCC TKs1032K49 2(17 DDC 621.38450-dc23LcrecordavailaBleathttps://lccnioc-gov/2016m5220)ISBN 978-1-107-17241- HardbackCambridge University Press has no responsibility for the persistence or accuracy ofURLs for extermal or third-party Internet websites referred to in this puhlication,and does not guarantee that any content on such websites is, or will remainaccurate of appropriateContentsList of Contributorspage xvIPrefaceKXIOverview of New Technolog ies for 5G SystemsVincent W S, Wong, Robert Schober, Derrick Wing Kwan Ng, and Li-Chun Wang1.1 Introduction1.2 Cloud Radio Access Networks1.3 Cloud Computing and Fog Computing1. 4 Non-orthogonal Multiple Access1. 5 Flexible Physical Layer Design334.4671. 6 Massive MIMo1. 7 Full-Duplex Communications1. 8 Millimeter wave1.9 Mobile Data Offloading, LTE-Unlicensed, and Smart Data Pricing131. 10 IoT M2M. and D2D1. I1 Radio Resource Management, Interference Mitigation, and Caching61. 12 Energy Harvesting Communications1. 13 Visible Light Communication19Acknowledgments20ReferencesPart I Communication Network Architectures for 5G Systems25Cloud Radio Access Networks for 5G Systems27Chih-Lin I, Jinn Huang, Xueyan Husang, Rongwved Ren, and Yami. Chen2.1 Rethinking the Fundamentals for 5G Systems272 User- Centric Networks2923 C-RAN Basics292.3.1 C-RAN Challenges Toward SGI302.4 Next Generation Fronthaul Interface (NGFI: The FH Solutionfor SGC-RAN312. 4.1 Proof-of-Concept Development of NGFI33Contents2.5 Proof-of-Concept Verification of Virtualized C-RAN2.5.1 Data packets3725.2 Test Procedure382.5.3 Test Results392. 6 Rethinking the Protocol Stack for C-RAN2.6.1 Motivation402.6.2 Multilevel Centralized and Distributed Protocol Stack402.7 Conclusion45AcknowledgmentsReferencesFronthaul-Aware Design for Cloud Radio Access Networks48Liang Liu, Wei Yu, and Osvaldo Simeone3. 1 Introduction483.2 Fronthaul-Aware Cooperative Transmission and Reception493. 2.1 Uplink513.2.2 Downlink573.3 Fronthaul-Aware Data Link and Physical layers61.3. I Uplink633.3.2 Downlink693.4 Conclusion73Acknowledgments74References74MobEdge computing76Ben Liang4.1 Introduction764.2 Mobile Edge Computing774.3 Reference architecture794.4 Benefits and Application Scenarios804 4.1 User-Oriented Use cases4. 4.2 Operator-Oriented Use Ca814 5 Research challenges824.5.1 Computation Offloading824.5.2 Communication Access to Computational Resources834.5.3 Multi-resource Schedulin844.5 4 Mobility Management854.5.5 Resource Allocation and Pricing4.5.6 Network functions virtualization864.5, 7 Security and Pri864.5.8 Integration with Emerging Technologies874.6 Conclusion88ReferencesContentsDecentralized Radio Resource Management for Dense HeterogeneousWireless networksAbolfazl Mehhodniya and Fumiyuki Adach5.1 Introduction925.2 System Model935.2.1 SINR Expression5.2.2 Load and Cost Function Expressions955.3 Joint BSCSA/UECSA ON/OFF Switching Scheme965.3.1 StrateTy Selection and Beacon Transmission53.2 UE AssocIation5.3.3 Proposed Channel Segregation Algorithms985.3.4 Mixed-Strategy Update3.4 Computer Simulation5.5 Conclusion104Acknowledgments04References105Part ll Physical Layer Communication Techniques107Non-Orthogonal Multiple Access(NOMA)for 5G Systems109Wei Llang, Zhiguo Ding, and H. Vincent Poor6.1 Introduction1106.2 NOMA in Single-Input Single-Output(SISO)Systems1126.2.1 The basics of nomaI126. 2. 2 Impact of User Pairing on NOMA136.2,3 Cognitive Radio Inspired NOMA6. 3 NOMA in MIMO Systems1206.3.1 System Model for MIMO-NOMA Schemes1216.3.2 Design of Precoding and Detection Matrices with Limited CSIT 1236.3.3 Design of Precoding and Detection Matrices with Perfect CSIT 1266.4 Summary and Future Directions128ReferencesFlexible Physical Layer Design133Maximilian Matthe, Martin Danneberg, Dan Zhang, and Gerhard Fettweis7.1 Introduction1337. 2 Generalized Frequency Division Multiplexing357.3 Software-Defined waveform1377. 3. 1 Time Domain Processing1387.3.2 Implementation Architecture1387.4 GFDM Receiver Design14174 Synchronization unit1427. 4.2 Channel Estimation Unit1474.3 MIMo-GFDM Detection Unit145Contents7.5 Summary and Outlook147Acknowledgments148References488Distributed Massive MIMO in Cellular Networks15IMichail Matthaiou and Shi Jin8. I Introduction15l8. 2 Massive MIMO: Basic Principles1528.2.1 Uplink Downlink Channel Models1538.2.2Favorable Propagation1548.3 Performance of Linear Receivers in a Massive MIMO Uplink1548.4 performance of linear precoders in a massive mimo downlink1578. s Channel estimation in massive mimo systems1588.5.1 Uplink Transmission1598.5.2 Downlink Transmission1608.6 Applications of Massive MIMO Technology1618.6.1 Full-Duplex Relaying with Massive Antenna Arrays1618.6.2 Joint Wireless Information Transfer and Energy Transfer forDistributed massive mimo1638.7 Open Future Research Directions1678. 8 Conclusionl68References169Full-Duplex Protocol Design for 5G Networks172Tanelf Ahonen and Risto wichman9.1 Introduction1729. 2 Basics of Full-Duplex Systems1739.2.1 In-Band Full-Duplex Operation Mode1739.2.2 Self-Interference and Co-channel Interference1749.2.3 Full-Duplex Transceivers in Communication Links1759. 2. 4 Other Applications of Full-Duplex Transceivers1789.3 Design of Full-Duplex Protocols1799.3, 1 Challenges and Opportunities in Full-Duplex Operation1799.3.2 Full-Duplex Communication Scenarios in 5G NetworksR9.4 Analysis of Full-Duplex Protocols1829.4.1 Operation Modes in Wideband Fading Channels1829. 4, 2 Full- Duplex Versus Half-Duplex in Wideband Transmission1849.5 Conclusion1849.5.1 Prospective Scientific Research DirectionsI849.5.2 Full-Duplex in Commercial 5G Networks185RLItrtncekl8610Millimeter Wave Communications for 5G Networks188Jiho Song, Miguel R Castellanos, and David J. LoweContentsⅸx10.1 Motivations and Opportunities18810.2 Millimeter Wave Radio Propagation18910. 2.1 Radio Attenuation1890. 2. 2. Free-Space Path LOSs19I10.2.3 Severe shadow19310.2 4 Millimeter Wave Channel model19310.2.5 Link Budget Analysis19410.3 Beamforming Architectures19510.3, Analog beamforming solutions19610.3.2 Hybrid Beamforming Solutions20010.3.3 Low-Resolution Receiver Architecture2010.4 Channel Acquisition Techniques20110.4.1 Subspace Sampling for Beam Alignment20210.4.2 Compressed Channel estimation Techniques20510.5 Deployment Challenges and Applications20710.5.1 EM Exposure at Millimeter Wave Frequencies20710.5.2 Heterogeneous and Small-Cell Networks208Acknowledgments209References209Interference Mitigation Techniques for Wireless Networks214Koralia N Pappi and George K, Karag annidis1 1.1 Introduction21411.2 The Interference Management Challenge in the 5G vision21411. 2. 1 The 5G Primary Goals and Their Impact on Interference2141 1.2.2 Enabling Technologies for Improving Network Efficiencyand Mitigating Interference21611.3 Improving the Cell-Edge User Experience: Coordinated Multipoint218I 1.3.1 Deployment Scenarios and Network Architecture2181 13. 2 CoMP Techniques for the Uplink22011.3.3 CoMP Techniques for the Downlink2211 1.4 Interference Alignment: Exploiting Signal Space Dimensions2231 1.4.1 The Concept of Linear Interference Alignment224L1. 4.2 The Example of the X-Channel225I 1. 4.3 The K-User Interference Channel and Cellular NetworksAsymptotic Interference Alignment22611.4.4 Cooperative Interferenee Networks22711.4.5 Insight from IA into the Capacity Limits of Wireless Networks 22711.5 Compute-and-Forward Protocol: Cooperation at the ReceiverSide for the Uplink22811.5.1 Encoding and Decoding of the CoF Protocol22811.5.2 Achievable-Rate Region and Integer Equation Selection23011.5.3 Advantages and Challenges of the CoF Protocol232IL6 Conclusion233References233
- 2020-12-06下载
- 积分：1
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基于dsp的任意信号发生器的设计与实现
这是一篇完整的毕业设计论文且功能全部实现，并带有源程序。 该信号发生器主要由TMS320C5410和TLC320AD50C两大部分组成。在DSP芯片上完成对波形的编程，通过多通道缓冲串口向TLC320AD50C（数模转换器）发送波形数据，通过TLC320AD50C的插值滤波等措施产生模拟波形输出。该信号发生器的硬件设计中TMS3205410和TLC320AD50C的连接采用SPI协议，TLC320AD50C作为SPI主器件，提供帧同步和时钟信号，多通道缓冲串口作为SPI从器件。该信号发生器的软件编程主要采用模块化的设计思想，把程序细化成易于实现的小模块。编程的语言主要采用执行效率高的汇
- 2020-11-30下载
- 积分：1
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运动模糊图像复原毕业论文
本论文主要介绍了对运动车牌模糊图像的复原处理，着重解决了含噪运动模糊图像和局部运动模糊图像的复原问题，采用改进的局部运动模糊对象提取算法实现局部运动模糊图像的复原。
- 2020-11-29下载
- 积分：1
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用MATLAB的GUIDE工具做有GUI界面的串口通信上位机
用MATLAB的GUIDE工具做有GUI界面的串口通信上位机，需要的可以下了参考。
- 2020-12-06下载
- 积分：1
