MATLAB实现HOG特征提取

8个官方给定的案例(含代码)：多孔介质、壁温、粘度、UDS、流化床、非均匀流动、沉降、动网格。121页内容，提供代码供参考，简单易学Fluent ANSYS UDF CFD CAE。

黑客防线15年杂志pdf打包,pdf包含附件,包含1到5期杂志内容,但5期后黑客防线停运了,所以以后就没有了

本程序是主成分回归的一个详细举例，有注释，方便做主成分回归分析的人参考。

本课题设计采用单片机AT89C51为核心，设计出篮球计分计时系统，可以实现单节比赛12分钟倒计时、24秒进攻时间倒计时、开始/暂停倒计时、改变节次、单节结束报警、两队比分分别加1分、加2分、加3分等各种显示效果。本系统利用LCD1602液晶显示器作为显示器件，显示节次、12分钟倒计时、24秒倒计时、主客队双方比分，通过3*3矩阵键盘来控制计时器和计数器工作，单节比赛结束时LED发光二极管闪烁报警。该设计采用LCD1602液晶显示器，因为其微功耗、小体积、使用灵活等诸多优点在袖珍式仪表和低功耗应用系统中得到越来越广泛的应用，通过仿真基本上实现了上述功能，操作简单，性能稳定，符合一般篮球计分器

QPSK与OQPSK数字调制方式MATLAB代码;OQPSK也称为偏移四相相移键控（offset-QPSK），是QPSK的改进型。它与QPSK有同样的相位关系，也是把输入码流分成两路，然后进行正交调制。

多摩川编码器说明书 串行信号接收芯片AU5561可 以解码Ts5647、 Ts5648、Ts5667、 Ts5668、 Ts5669等 型号的编码器 ,可以提供40到iiO位串并信号的转换 ,并且可以和1s/32位 CPU或DsP总线接 口。AU5661N1,提 供中断信号与CPU同步 ,它也能在没有CPU的两种方式 (手动模式 )下读取编码器数据 :lD3(单回转数据 ,多回转数据与报警7S508TS5170O/S128serieso/S85 series产品类型增量式产品类型增量式incrementalIncremental电源电压电源电压Supply voltageDC+24V±20%Supply voltageDC+5V±5%外径128Imrn85mm分解能25~5000C/T分解能9600~50,000CResolutionResolution输出方式电压输出 otago Cutput输出方式长线驱动Output for推拉互补输出 Push pul OutputOutput formLine Drive保护构造P=57保护构造P-52Protective constructionProtective construction质量7 kg Max据置型,8 kg max/加载型质量1 kg MaxMassvass用途: Application用途: Application制造钢铁生产线 Iron steel line■交流伺服马达 AC servo motors工程机械 Machine tools造纸生产线 Paper Producing LineT55410S5647755648O/S90 SeriesSA56 Series产品类型增量式产品类型智能绝对式IncrementalSmart Abs电源电压DC+5V±5%电源比压Supply VoltageSupply Voltage外径56mmSizeSize分解能00c0C/T,100,000G丌,12000T,分解能20or16oit多回转计数量16bt器Resolution36000CcT,400,000c7,480,0007Resolution(65,536转)合计6or32bt输出方式长线驱动20 or 16bit/tum and 16bit/65, 536Output formturns(total 36 or 32bit)保护构造输出方式Protective constructionOutput formLine driver质量3kg Max保护构造开放构造Protective constructionNot Enclosed用途: Application0. 6kg Max测量设备 Measuring Equipment工程机械 Machine tools用途: Application■工程机械 Machine tools机器人 Robots机器人 Robots计测机器 Measuring Instruments高精度角度割出装置Hgh- accuracy Angular Indexing Equipment半导体生产设备 Semiconductor manufacturing Equipment7S5667N2537S5667N650SA100 SeriesSA135 Seeres产品类型智能绝对式产品类型智能绝对式Smart AbsSmart Abs电源电压电源电压DC+5V±5%DC45V±5%Supply voltageSupp y voltage外径135mm100mm分解能17b转,16bt转总计3bt分解能17b转,16多转总计33btResolution17cit/um and 1 6bit multitums Total 33 bitResolution7btturm and 16bit multiturn Total 33 bit长线驱动输出方式长线驱动输出方式Output formLinc drivcrLine Driver保护构造保护构造P-40Protective constructionProtective construction质量12 ka Max(不含引线)质量15 kg max(不含引线) Without cable)Mass(Without cable)用途: Application用途: Application大功率马达 Large wattage motors大功率马达 Large wattage motors机器人 Robots机器人 Robots工程机械 Machine Tools工程机械 Machine tools树脂成形机 njection Machines树脂成形机 njection MachinesQAnD艾而特22电梯专用编码器ELEVATOR ENCODER尺寸 mm Dimer sion mmTS5200N500PCD4Do/H48Serieshounding plate details蝙码器安装面Encocer mounting surtace用途特点252M3闪六角丝APPLICATIONFEATURESpicket se: screw在轴上痄荐尺寸(Attachedsions or shaft●有齿、无齿电引机●易安装Gear and gearless tractive motor Easy to attach除非特别说明,否则公券一律为=05 mnUnless otherwise specified tolerance is s+n5m尺寸 mm Dimension mnTS5200N400p35O/H60Series空」用途特点APPLICATIONFEATURES器有齿、无齿曳引机易安装雄明细图内六角手拧紧Gear and gearless tractive motorEasy to attach轴推荐尺寸出除非特别说明,否则公差一律为±0.5 Ium Urless otherwise spccificd tolerance is+0:m755208N1e OlH100 series式样SPECIFICATIONS135●输出方式:长线驱动、推拉互补、集电极开路、正余弦=52留投线表CTION TABLEOutput form: Line Driver, push Pull, open collector, Sincos我色功能「引线频色。●电源电压 Supply voltage:5-15V●分解能 resolution:1024、40965000、6000、8190、10000CT当U儿在轴上批荐只寸抽璃址图、的普属2警出PU安装方式:各种各样Attaching way: VariousOH分解能C丌光电式 Optical外径SizeN。 TSLLLUNLI增量型中48mmResolution中6o512中空轴 Hollow Shalt4100mm1024TS5208编码器 EncoderTs5213翰出相4096TS5216ABZs52176 A, B, Z u, M,wTs52337: A, B, ZFOF1F2, F360008192TS524610000TS5236输出方式C:开放电极 Open Co lecto拉写补 Push pull长线驱动 Line driver⑧对于特殊情况,请联系我们O For special cases, pleasc consult us.23【AnD艾而特连接方面的注意事项NOTICE IN TRANSMITTING1.怎样连接到电源1. HOW TO CONNECT TOA POWER SUPPLY应该通过单独的带屏蔽线的电源线进行连接,任何Connection should be made using a plus and ground不正确的连接方法或不合适的连接线都可能导致传power line which is shielded within a single insulatedcable. Incorrect connection or improper cables will cause输噪音。unwanted noise in transmission编码器应该单独连接到电源,并且独立于编码器一The encoder should be connected to the power supply起作的电子设备,每样设备都应该使用独立的电separate from the electric device that the encoder is缆连接到电源。operating. Each should be connected to the power supplyusing separate cables而不要通过中间电子设备连接到电源。编码器和中Do not connect the encoder thru the electric device to间电子设备的地线之间仔在的阻抗会导致编码器和the power supply. The potential difference between the电源之间产生潜在的差异,这种差异将导致异常ground levels of the encoder and the power supply willbe produced by impedance of zero level bus within theelectric device. This will cause malfunction.编码器输出Encoder Output编码器输出coder Output电源电了装置电源④电子装置PowerElectricSupply编码PowerSupplyElectric device掮码器′Bu图-1好例子图-2不可取例子Fig 1 Favorable SampleFig2. No Recommendable Sampl2.地线应该尽可能的粗2. GROUND LINE SHOULD BEAS THICK AS POSSIBLEIi是电源旳输岀电流,Io是编码器流过地线的输li for power supply current and lo for output signals of an州燃出信号,Re是接地线直流阻抗,Ⅵ为输出信号可encoder will flow thru a ground line. In case of Re for DCresistance of the ground line, VL for the level of the output表达如下signals will be as followsVL=(o+li)·Re(V)=(o+i)·Re(V)ⅥL值不会超出接收器阈值电平Vt,Re要尽可能小The value of vi should not exceed t of threshold level因为当Ⅵ接近Ⅵ时,编码器对于外部噪音米说是脆for a receiver. Re should be as small as possible sincethe encoder will be vulnerable to external noise when Vl弱的。is closer toⅥt.对丁长距离信号传送,除了电源插头上的一条地线In case of long-distance transmission, another ground外,再加·条地线也是必要的。line besides the ground line paired with the plus line maybe necessary.〖()AnD艾而特243.外壳和电路之间短接3. SHORT BETWEEN CASE GROUNDAND CIRCUIT GROUND在喚音比较重的环境中,在编码器外壳地和电路地In case of having noise more than 50V between case之间的噪音信号可能会超过50V,编码器电路可能会ground and circuit ground under noisy circumstances, anelectric circuit for an encoder may not function normally.出现功能异常,在这种情况下,我们建议将外壳和In this case, the short-circuiting of case ground and cir电路地短接。cuit ground is recommendable然而,有时侯由于传送距离过长,短接可能会产生一However, in case that other adverse effects appear些相反的效果,或者说根本不可能将其短接时,我们 because of a long transmitting distance when case andcircuit ground for an encoder are short-circuited and in建议将外壳和电路之间加接个几个微法的有较好的case shorting them is impossible for some reason, it is频率特性的电容,用米做过滤噪音的滤波器。recommendable to provide, between case and circuitground, a few micro farad condensers with better fre-uency characteristics used for a noise filter.4.电源线有噪声的情况4. IN CASE OF HAVING NOISE ONPOWER LINE电源应该通过一根完全被屏蔽好了的传输线提供给Power should be supplied to an encoder thru a transmit-编码器,这样就不会有喚音信号出现在电源线上。ting line completely shielded so that no noise occurrs onpower line将屏蔽线接地以稳定信号Stable potential should be maintained by grounding thehield有必要加长屏蔽线,这样在编码器附近的传输线就It is necessary to distribute lines so that a transmitting不会被暴露在屏蔽线外面。line should not be exposed from the shield near anencoder删5编码带输出信号有尖峰的情况5. IN CASE OF SPIKE WAVESBETWEEN OUTPUT SIGNALSFOR AN ENCODER在尖峰脉冲出现的情况下,将由双绞线传送信号消In case of spike waves as shown in fig 3, Spike waves除尖峰脉冲。shall be deleted by transmitting by twist pair shield line尖峰信号尖峰信号图-3峰形波图-3峰形波Fig 3 spike wavesFig 3 spike waves6.编码器盒的潜在安全措施6. POTENTIAL STABILIZATION FORAN ENCODER CASE编码器盒必须被保持在稳定的电位状态。An encoder case must be maintained in stable potential5[AnD艾而特传送距离TRANSMITTING DISTANCE在开放集电极的情况下!IN CASE OF OPEN COLLECTOR传输距离在大约50m以内(12VDC上拉),20mA集电极Transmission within a distance of about 50m(12V DC pull电流将是允许的!up) and 20mA as collector current shall be allowable在长距离传输的情况下,带光耦的接受电路在图4In case of a long range transmission, receiving circuit with适合消灭在传输线中的噪音!photo couplers in fig. 4 is suitable for eliminating noisein transmission编码器屏酸线编码器屏蔽线EncoderShield CableShield Cable≤RR2Dc输出输出Output图-4Fig.4图-4Fig.4在长线驱动的情况下IN CASE OF LINE DRIVER26Ls3126LS32(编码器 Encoder/※传送距离1km以下编码器 Encoder/※传送距离1m以下Transfer distance 1km MaxTransfer distance 1km max双絞线屏蔽双绞线屏蔽Twisted Pair Shield cableTwisted Pair Shield Cable图-5Fg.5图-5Fig.5在推拉互补的情况下!IN CASE OF COMPLIMENTARY双绞线屏蔽双绞线屏辙Twisted Pair Shield CableTwisted Pair Shield CableA:2Sc3733B: 2SA1电源 Power SupplyA2sC3733电源 Power SupplyB2SA1460A这XGNDXXXX GND厂输出信号线输出信号线itput signal编码器 EncoderL:负载L编码器EL:负载ncodeL: Load怎样使用编码器控制信号H0WT0 USE ENCODER G0 NTROL SIGNALS反向输入REVERSE INPUT通过端了“”或‘L”输入可以改变编4.7kgEncoder direction can be changed by码器方向,CCW和CW之间切换成为可能。输入inputting Hor L to this terminal.如果不需要改变方向,电路输入4.7K欢In case of no necessity of changing相对的电压为正5伏电压,或接地direction wire this terminal to +5v thru4.7K Q2 or ground to the terminal.门集输入GATE INPUT在该端子输入"凵"低电平可以保持编码器的Angle data for an encoder shall be held角度数据(直到输入高电平将数据锁存)by inputting L to this terminal(Data shall be latched until H is输入putted)数据输入门电路后,大约需10μs的时间rptAfter inputting data to gate, about 10us米锁存数据,因此这段时间过去后才能is required to latch data. So data can be刷新数据。renewed after passing this elapsed time.〖)AnD艾而特26用语定义DEFINITIONS在本书中主要术语的定义如下Definitions of principal terminology used in this catalog areas follows①旋转式编码器:一种将轴旋转角度转化为数字信息的检测① Rotary encoder: a detector that converts the rotary dis.placement of the shaft into digital signal.②增量型:根据轴旋转位移输出脉冲序列的类型2)Incremental type The type that outputs a pulse train inaccordance with the rotary displacement of the shaft.③光电型:通过检测旋转轴上改变的光量来接收信号的类型, Optical type. The type that rece, due to is by detecting在轴上附带了光电检测机构和光栅the shaft, coming with an optical detecting mechanismand an optical lattice fixed to the shaft.④磁性型:通过检测轴上旋转而改变的磁场来接收信号4 Magnetic type The type that receives signals by detect-ing the change in the magnetic field due to the rotation ofthe shaft, coming with an magnetic detecting mechanismand a magnetic lattice fixed to the shaft⑤2相输出:一种由A、B相输出信号组成的模式,其相位差为⑤2 phase output: A mode with two outputs called A phase/4周期。⑥6相输出:一种由A、B、Z相和U、V、W相组成的模式。(66-phase output: A mode consisting of A, B Phase andZero reference pulse commutation output of UWw signal⑦参考0位:也叫做Z相,作为转一圈的位置参考(7) Zero reference: Output(also called Z phase)which servesas reference for the position during one rotation.⑧开集输出:输出采川共发射极电路,并且集电极开路。(8)Open collector output An output circuit having the emitter of the transistor of the output circuit as common ancthe collector of open typeNPNNPNK⑨长线驱动输出:输出电路兼容EA(电子工业协会)(9) Line driver output Output circuit in compliance with EIARS-122A(Electric Industries Association)RS-422A(Some products are excepted from the standard.c outo out⑩最大旋转速度:轴的旋转对机械允许的速度最大值(10 Maximum rotation speed: The value indicating the maximum revolving speed mechanically permissible witrespect to the rotation of the shaft.假①最大响应频率:轴的旋转对电气响应的最大频率(有时受① Maximum response frequency: Frequency showing th最大转速限制)。limit of electrical response with respect to the rotationtne shaft(Sometimes limited by the maximum permissiblrotation speed)①2径向负载:轴的径向负载(12 Radial load: A vertical load onto the shaft①3推力负载:轴的轴向负载。(13)Thrust load A longitudinal load onto the shaft⑩轴类型:从旋转式编码器本身连接轴的轴结构。(14) Shaft type A structure with a shaft projecting from throtary encoder body.⑩中空轴类型:轴中空,被测量部分的轴直接被插入来迮接。① Hollow shaft type: A shaft with a hole inside, into whica shaft of the measured side is directly inserted for co⑩UW信号:元刷马达的120度相位差3信号(电气角16 UVW signal: Three signals of 120 phase difference forbrushless motor.240W①绝对编码器的备用电池:多回转绝对值编码器上用来提供 Battery backup absolute encoder: A multiturn absolu给计数ICencoder with counter IC provided within it.⑩3串行传输:传达许多数据信号系统以时差给电路的Serial transmission A system of transmitting many da输出线signals with time differences to an output line of a circuit27【AnD艾而特1.保护构造的种类和各类命名Types and Designations of protective structure表1防止固体物进入的保护结构种类Table 1 Types of Protective Structure against Entry of Solids第1记号保护等级First CodingProtection Degree3(半封闭型)固体的末端直径2.5mm或不能进入甲面。3( Semi totally-enclosed typeEnds of solids 2.5mm or over in diameter do not enter inside4(全封閉型)固体的末端直径1.0mm或不进入里面。4(Totally-enclosed typeEnds of solids 1. 0mm or over in diameter do not enter inside5(防尘型编码器所定的动作及安全性阻止粉尘进入。5(Dustproof typeDust that impairs the designed operation or safety of the rotary encoder do not enter inside6(耐尘型)粉尘不进入里面。6(Dusttight typeDust particles do not enter inside.表2对水侵入的保护结构的种类Table 2 Types of Protective Stucture against Entry of Water第2记号保护等级Second CodingProtection Degree0(开放型)不能防止水不进入。o(Open typeNot protected against entry of water.2(防滴2型)沿垂直15度以内下落水滴没有损害。2(Drip-proof 2 typeSubject to no harmful effects by waterdrops falling at angles 15 or less from vertical.3(防雨型)沿垂直60度以内下落水滴没有损害。3(Rain-proof typeSubject to no harmful effects by waterdrops falling at angles 60%or less from vertical4(防喷雾型)由任意方向喷雾都没有损害。4(Spray-proof type,Subject to no harmful effects by water spray from any direction.5(防喷射型)由任意方向喷射都没有损害。5( Jet-proof typeSubject to no harmful effects by water jets from any direction6(防水型)由任何方向直接喷流的水都没有损害。6(Water-proof type)Impervious to water in strong jets from any direction. ( Note 1)7(防浸型)规定的压力和时间浸没在水之下没有水进入7(Immersion-proof typeNo water entering when immersed under water at specified pressure for specified time注:耐水型意思是产品结构上不会让强水柱由任意方向进入,但Note(1)"Water-proof"means a structure that does not allow the entry of假不代表结构允许在水下使用water against strong water jets from any directions, but it doesnot mean a structure that allows use under water.2.保护构造的命名2. Designations of Protective Structure编码器的防护结构的命名包括防护结构文字IP,第1The designation of protective structure of a rotary记号和第2记号次序。encoder is comprised with IP meaning the protectivestructure. first characteristic numeral and second characteristic numeral in this order如果或第一代码或第二个代码不被指定,它必须由XIn case either the first code or the second code is not代表specified, it must be represented by X.例1|P40|P40Characteristic letters例2|P65第2记号(开放型)Example 1 IP 40 P 40Example 2 IP 652nd characteristic numeral例3|P4X第1记号(全闭型)例4|PX5Example 3 IP 4X1st characteristic numeralExample 4 IPX5(AnD艾而特28换算表CONVERSION TABLE二进制总数°(度)(分(秒Binary Bit Countsdegree(min)(sec)128281251687510125001.406258437550625095120.70312542.1875253125100351562521.093751265632,0480.1757812510.546875632811240960.087890642552734375316.411381920.0439453132.636718751582014163840.0219726561.31835937579101532,7680.0109863280.65917968839551665,5360.0054931640.3295898441978131,0720.0027465820.1647949229.18262,1440.0013732910.0823974614.94192880.0006866460.0411982.201.0485760.003433230.0205993651.242,097,1520.0001716610.0102996830.624,194,3040.0000858310.0051498410.31228388,6080.0000429150.0025749210.152416,777,2160.0000214580.00128746033.5544320.00010290.0006437300.0467,1088640.00000536400003218650.019134,217,7280.0000026820.0001609330010268435,456000001410.000804660.00229536,870,9120.0000006710.000040233301,073,741,8240.0000003350.0000201170.001角度换算表ANGLE CONVERSION TABLE1弧度( radian)=57295780=34377468=206,264801°=0174533弧度( radian)=17.4533mrad1=00290888弧度( radian)=290888mrad1”=.00000484814弧度( radian)=00484814mrad.角度概念角度(视角)(视角d相当于人的标准身高17T10.000秒(28度)35m秒(0.28度350m秒(0.028度3.5km10秒35km(东京←→八王子)(饭田←→伊那2秒180km(东京←·饭田)1秒350km(东京←→京都)0.6秒东京←→八户)0.5秒650km(饭田←→八户0.1秒冲绳←→北海道稚内5.00km(到达静止卫星的距离角度x距离29【△DD艾而特

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

webrtc新版语音流程图，visvo画的，详细介绍了整个音视频流程，基于版本M57

SAR雷达成像点目标仿真，包含RD算法和CS算法的原理+Matlab程序，程序每一行均有注释，适合入门以τ的时闫发射啁啾脉冲,然后切换天线开关接收回波信号。脉冲重复间隔为l发接收图雷达发射脉冲串的时序当雷达不处于发射状态时,它接收反射回波。发射和接收回波的时间序列如图所示在机载情况下,每个回波可以在脉冲发射间隔内直接接收到。但是在星载情况下,由于距离过大,某个脉冲的回波要经过个脉冲间隔才能接收到。这里仿真为了方便,默认为机载情況脉冲回波时间图脉冲雷达的发射与接攻周期假设为信号持续时间,下标表示距离向:为重复频率,为重复周期,等于。接收序列中,τ衣示发射第个脉冲时,目标回波相对于发射序列的延时。雷达的发射序列数学表达式为式式中,表示矩形信号,为距离向的信号调频率,为载频。雷达回波信号由发射信号波形,天线方向图,斜距,目标,环境等因素共同决定,若不考虑环境因素,则单点目标雷达回波信号可写成式所示:其中,G表示点目标的雷达散射截面,表示点目标天线方向图双向幅度加权,z表示载机发射第个脉冲时,电磁波再次回到载机时的延时r,带入式中得式就是单点目标叵波信号模型,其中,是分量,它决定距离向分辨率;为多普勒分量,它决定方位向分辨率对于任意一个脉冲,回波信号可表小为式所小我们知道,由于随慢时间的变化而变化,所以计算机记录到的回波数据存储形式如图所示:贴棘·●鲁通ib●幽●中@中●●●。●●鲁●●ed●●i●●一●●:b●t老!y·●●●●●Outuinh0ib●●●●·:·:·;D●●中·!达脉冲长度斜距(军样数或单元置)图目标照射时间内,单个点目标回波能量在信号处理器的二维存储器中的轨迹4距离徙动及校正根据图可知,在倾斜角为零或很小的时侯,目标与雷达的瞬时距离为,根据几何关系可知,,根据泰勒级数展开可得:由式可知,不同慢时间对应着不同的并且是一个双曲线形式或者近似为个二次肜式。如图所示,同一目标的回波存储在计算机里不在同一直线上,存在距离徙动从而定义距离徙动量:为了进行方位向的压缩,方位向的回波数据必须在同一条直线上,也就是说必须校止距离徙动Δ。由式()可知,不同的最近距离对应着不同的▲,因此在时域处理距离徙动会非常麻烦。因此,对方位向进行傅里叫变换,对距离向不进行变换,得到新的域。由于方位向的频率即为多普勒频率,所以这个新的域也称为距离多普勒域将斜距写成多普勒的函数,即。众所周知,对最近距离为的点目标回波多普勒是倾斜角b的函数,即=2,斜距,于是6:≈所以距离多普勒域中的我距离徙动为Δ,可发现它不随慢时间变换同一最短距离对应着相同大小的距离徙动。因此在距离多普勒域对一个距离徙动校正就是对一组具有相同最短距离的点目标的距离徙动校止,这样可以节省运算量。为了对距离徙动进行校正,需要得到距离徙动单元,即距离徙动体现在存储单元中的移动数值,距离徙动单元可以表示为△这个值通常为一个分数,由于存储单元都是离散的,所以不同通过在存储单元简单的移动得到准确的值。为了得到准确的徙动校正值,通常需要进行插值运算。本仿真釆用了两种插值方法最近邻点插值和插值,下面分别进行介绍。最近邻点插值法的优点是简单而快速,缺点是不够精确。Δ其中为整数部分为小数部分,整数部分徙动可以直接通过平移消除,对于小数部分则通过四舍五入的方法变为或者,这样就可以得到较为精确的插值插值原理如下:在基带信号下,卷积核是函数插值信号为即为所有输入样本的加权平均。可通过频域来理解,如图所示,采样信号频普等于以采样率重复的信号频谱。为了重建信号,只需要一个周期频谱(如基带周期),因此需要理想矩形低通滤波器在频域中提取基带频谱(如图)所示。凵知该理想滤波器在时域中是函数。由于频域相乘相当于时域卷积,故插值可以通过与核的卷积来实现信号频谱幅度理想低通滤波器-101频率图理憇低通滤波器怎样对采样信号进行插值5点目标成像 matlab仿真5.1距离多普勒算法距离多普勒算法(是在年至年为民用星载提出的,它兼顾了成熟、简单、髙效和精确等因素,至今仍是使用最广泛的成像算法。它通过距离和方位上的频域操作,到达了高效的模块化处理要求,同吋又具有了一·维操作的简便性。图示意了的处理流程。这里主要讨论小倾斜角及短孔径下的基本处理框当数据处在方位时域时,可通过快速卷积进行距离压缩。也就是说,距离后随即进行距离向匹配滤波,再利用距离完成距离压缩。回波信号为:距离向压缩后的信号为:通过方位将数据变换至距离多普勒域,多普勒中心频率估计以及大部分后续操作都在该域进行。方位向傅里叶变换后信号为:在距离多普勒域进行随距离时间及方位频率变化的,该域中同距离上的组日标轨迹相互重合。将距离徙动曲线拉直到与方位频率轴平行的方向。这里可以采用最近邻点插值法或者插值法,具体插值方法见前面。假设插值是精确的,信号变为:通过每一距离门上的频域匹配滤波实现方位压缩。为进行方位压缩,将后的乘以频域匹配滤波器最后通过方位将数据变换回时域,得到压缩后的复图像。复原后的图像为:正达原始教据距离压缩方位向傅里叶变换距离徙动校正方位压方位向傅里叶逆变及多视叠加压缩数据图距离多普勒算法流程图5.2 Chirp Sca l ing算法距离多普勒算法具有诸多优点,但是距离多普勒算法有两点不足:首先,当用较长的核函数提高距离徙动校正()精度时,运算量较大:其次,二次距离压缩()对方位频率的依赖性问题较雉解决,从而限制了其对某些大斜视角和长孔径的处理精度。算法避免」中的插值操作,通过对信号进行频率调制,实现了对该信号的尺度变换或平移图显示了算法处理流程。这里主要讨论小倾斜角及短孔径下的基本处理框图。主要步骤包括四次和三次相位相乘。通过方位向将数据变换到距离多普勒域。通过相位相乘实现操作,使所有目标的距离徙动轨迹·致化。这是第步相位相乘。用以改交线调频率尺度的二次相位函数为通过距离向将数据变到二维频域。通过与参考函数进行相位相乘,同吋完成距离压缩、和‘致这是第二步相位相乘。用于距离压缩,距离徙动校正的相位函薮写为:通过距离向将数据变回到距离多普勒域。通过与随距离变化的匹配滤波器进行相位相乘,实现方位压缩。此外,由于步骤中的操作,相位相乘中还需要附加一项相位校正。这是第三步相位相乘。补偿由引起的剩余相位函数是:最后通过方位向将数据变回到二维时域,即图像域雷达原始数据SAR信号域方位向傅里叶变换第一步相位相乘补余RCMC中的距离多Chirp sealing操作普勒域距离向傅里叶变换第一步相位相乘参考函数相乘用于距离压细、SRC和一致RCMC频域距离向傅里叶逆变美第三步(最后方位压缩及相位校王步)相位相乘距离多晋勒域方位向傅里叶道变换SAR图像域压缩数据图算法流程图简而言之,算法是将徙动曲线逐一校正,算法是以某一徙动曲线为参考,在域内消除不同距离门的徙动山线的差异,令这些曲线成为一组相互平行的曲线,然后在二维频率域內统一的去掉距离徒动。通俗一点就是,算法是将弯曲的信号一根根矫直,而算法是先把所有信号都掰得一样弯,然后再统一矫直。6仿真结果6.1使用最近邻点插值的距离多普勒算法仿真结果本文首先对个点目标的回波信号进行了仿真,个点目标构成了矩形的个顶点和中心,其坐标分别如下,格式为(方位向距离向后向反射系数):图的上图是距离向压缩后的图像,从图中可以看到条回波信号(其中有几条部分重合,但仍能看出米)目标回波信号存在明显的距离徙动,需要进行校正。图的下图是通过最近邻点插值法校正后的图像,可以看出图像基本被校正为直线。配萬向压缩,未交正距离徒动的图像距高可距离压缩,权E距高徒动日的图像L图距离向压缩后最近邻点插值的结果图为进行方位向压缩后形成的图像,可以明显看出个点日标,并且个点日标构成了矩形的四个顶点及其中心。方位向压缩后的图像图通过最近邻点插值生成的点目标图像6.2使用最近邻点插值的距离多普勒算法仿真结果图上图为通过距离压缩后的图像,图的下图为通过插值法校止后的图像。距离甸压缩,未校正距离徙动的图像距离向距离向压缩,校止离徙动后的图像距离向图距离向压缩后插值的结果图为进行方位向压缩后形成的图像,可以明显看出个点目标,并且个点目标构成了矩形的四个顶点及其中心。方位向缩后的图像图通过插值生成的点目标图像6.3 Chirp Scal ing算法仿真结果可样,在中,对个点目标的回波信号进行了仿真,个点目标构成了矩形的个顶点和中心,其坐标分别如下,格式为(方位向距离向后向反射系数):

【实例简介】文档包含了所有复杂网络研究中用到的Newman数据集，即所有的gml文档，为了统一格式，方便后续研究的方便，本人将其按照统一的方法为每个数据建立了一个对应的统一文档，格式为： 第一行为数据的基本信息，名称、节点数、边数、是否加权、是否有向 从第二行开始每行都是一个节点的信息，节点序号、label、邻居节点集、节点标签。有的节点可能没有邻居节点，所以邻居节点集可能为空。