wifi 802.11n 协议标准
wifi 802.11n 协议标准Contents2. Normative references ........................................................................................................................... 13. Definitions ...........................................................................................................EEE Std802.11n"-2009(Amendment to ieEE Std 802.11-2007as amended by ieee std 802. 11k-2008EEE Std80211r-2008, EE Std802.11y-2008,and IEEE Std 802. 11w-2009)EEE Standard forInformation technology-Telecommunications and informationexchange between systems-Local and metropolitan area networks-Specific requirementsPart 11: Wireless LAN Medium Access Control (MAC)and Physical Layer(PHY SpecificationsAmendment 5: Enhancements for HigherThroughputSponsorLANIMAN Standards committeeof theIEEE Computer SocietyApproved 11 September 2009IEEE-SA Standards boardAbstract: This amendment defines modifications to both the IEEE 802 1 1 physical layer(PHY)andthe IEEE 802 11 medium access control (MAC) sublayer so that modes of operation can be enabledthat are capable of much higher throughputs, with a maximum throughput of at least 100 Mb/s, asmeasured at the Mac data service access point (SAP)Keywords: high throughput, MAC, medium access control, MIMO, MIMO-OFDM, multiple inputmultiple output, PHY, physical layer, radio, wireless local area network, WLANThe Institute of Electrical and Electronics Engineers, Inc.3 Park Avenue New york NY 10016-5997 USACopyright@ 2009 by the Institute of Electrical and Electronics Engineers, IncAll rights reserved. Published 30 October 2009. Printed in the United States of AmericaIEEE is a registered trademark in the U.S. Patent Trademark Office, owned by the Institute of Electrical and ElectronicsEngineers, IncorporatedPDFSBN978-0-7381-60467STD95961Print:|SBN9780-7381-6047-4STDPD95961No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the priorwritten permission of the publisherIEEE Standards documents are developed within the ieee Societies and the standards Coordinating Committees ofthe IEee Standards Association (IEEE-SA) Standards Board. The ieee develops its standards through a consensusdevelopment process, approved by the American National Standards Institute, which brings together volunteersrepresenting varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of theInstitute and serve without compensation. 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Comments on standards and requests for interpretations shouldbe submitted to the following addressSecretary, IEEE-SA Standards board445 Hoes lanePiscataway, NJ 08854USAAuthorization to photocopy portions of any individual standard for internal or personal use is granted by The Instituteof Electrical and Electronics Engineers, Inc, provided that the appropriate fee is paid to Copyright Clearance CenterTo arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 RosewoodDrive, Danvers, MA 01923 USA; +1978750 8400 PerImission lo photocopy portions of any individual standard foreducational classroom use can also be obtained through the Copyright Clearance CenterIntroductionThis introduction is not part of IEee Std 802. 11n-2009, IEEE Standard for Information technology-Telecommunications and information exchange between systems--Local and metropolitan networks--Specifirequirements-Part 11: Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) SpecificationsAmendment 5: Enhancements for Higher ThroughputThis amendment specifies enhancements to IEEE 802. 11 physical layer(PHY)and medium access control(MAC) sublayer to provide modes of operation with useful data rates substantially higher than thosepreviously available. Significantly higher IEEE 802. 11 wireless local area network(WLAN) throughput isexpected to improve user experiences for current applications and to enable new applications and marketsegmentsNotice to usersLaws and requlationsUsers of these documents should consult all applicable laws and regulations. Compliance with theprovisions of this standard does not imply compliance to any applicable regulatory requirementsImplementers of the standard are responsible for observing or referring to the applicable regulatoryrequirements. iEEE does not, by the publication of its standards, intend to urge action that is not incompliance with applicable laws, and these documents may not be construed as doing so on that is not inCopyrightsThis document is copyrighted by the Ieee. It is made available for a wide variety of both public and privateuses.These include both use, by reference, in laws and regulations, and use in private self-regulationstandardization, and the promotion of engineering practices and methods. By making this documentavailable for use and adoption by public authorities and private users, the ieee does not waive any rights incopyright to this documentUpdating of IEEE documentsUsers of ieFF standards should be aware that these documents may be superseded at any time by theissuance of new editions or may be amended from time to time through the issuance of amendments,corrigenda, or errata. An official ieee document at any point in time consists of the current edition of thedocument together with any amendments corrigenda or errata then in effect In order to determine whethera given document is the current edition and whether it has been amended through the issuance ofamendmentscorrigendaorcrrata,visittheIeeEStandardsAssociationwebsiteathttp://ieeexplore. ieee. org/xpl/standards. jsp or contact the iEee at the address listed previously.For more information about the IEEE Standards Association or the Ieee standards development process,visittheIeeE-sawebsiteathttp://standards.ieeeorgErrataErrata,ifanyforthisandallotherstandardscanbeaccessedatthefollowingUrl:http://standards. ieee. org/reading/ieee/updates/errata/index. html. Users are encouraged to check this URL forta periodicallyInterpretationsCurrentinterpretationscanbeaccessedatthefollowingUrl:http://standards.ieeeorg/reading/ieee/interp/index htmlCopyright C 2009 IEEE. All rights reservedPatentsAttention is called to the possibility that implementation of this amendment may require use of subjectmatter covered by patent rights. By publication of this standard, no position is taken with respect to theexistence or validity of any patent rights in connection therewith. a patent holder or patent applicant hasfiled a statement of assurance that it will grant licenses under these rights without compensation or underreasonable rates, with reasonable terms and conditions that are demonstrably free of any unfairdiscrimination to applicants desiring to obtain such licenses. Other Essential Patent Claims may exist forwhich a statement of assurance has not been received. The Ieee is not responsible for identifying EssentialPatent Claims for which a license may be required, for conducting inquiries into the legal validity or scopeof Patents Claims, or determining whether any licensing terms or conditions are reasonable or nondiscriminatory. Users of this standard are expressly advised that determination of the validity of any patentrights, and the risk of infringement of such rights, is entirely their own responsibility. Further informationmay be obtained from the ieee Standards associationParticipantsWhen this amendment was sent to sponsor ballot, the IEEe 802. 11 Working Group had the followingofficersBruce P. Kraemer, ChairJon Walter Rosdahl, Vice Chair; Treasurer; and Chair, Task Group mbAdrian P. Stephens Vice chairStephen McCann, Secretary and Chair, Publicity standing Committee and Task group uTerry L. Cole, Technical Editor and Assigned Number AuthorityTeik-Kheong Tan, Chair, Wireless Next Generation Standing CommitteeDavid Bagby, Chair, Architecture Standing CommitteeBruce p. kraemer Co-Chair IMT-Advanced ad hoc commiteeLee armstrong, Chair, Task Group pDonald E Eastlake Ill, Chair;, Task Group sNeeraj Sharna, Chair, Task group lDorothy V. Stanley, Chair, Task Group v and IETF Ad hoc CommitteeJesse Walker, Chair. cTl Ad hoc committeePeter Ecclesine, Chair, Task group yMenzo Wentink, Chair, Task group zGancsh Venkatesan, Chair, Task Group aaEldad Perahia, Chair, Very High Throughput Study groupDarwin Enger, Co-Chair. IMT-Advanced ad hoc committeeWhen this amendment was sent to sponsor ballot, Task Group n had the following officersBruce P Kraemer. chairSILi. vice chairGarth Hillman and Jon Walter Rosdahl, SecretaryAdrian P. Stephens, Technical editorWhen this amendment was sent to sponsor ballot, the IEeE 802. 1l Working Group had the followingmembershiOsama S. aboulmagdMalik audchAmit bansalTomoko adachiCcrt A, awatoJohn. barrAlok aggarwalDavid bagbGal bassonCarlAldanaMichael bahrussa BavafaThomas AlexanderFan baiTuncer BaykasLee r. ArmstrongGabor BaikoJohn L. BenkoAlex ashleyDennis j. bakerMathilde benvenisteCopyright C 2009 IEEE. All rights reservedBiorn A. berkeRobert Y huangChiu ngoDaniel borgesDavid hunterEero nikulaAnthony braskichYasuhiko inoueRichardH. noensJoseph brennanAkio isoHideaki odagiriDavid britzJunghoon JeeJisung OhG. BumillerHongseok JeonChandra s. olsonNancy Cam-WingetYeonkwon JeongYouko omorNecati CanpolatJorjeta G JetchevaSatoshi oyamaJavier cardonaLusheng jiRichard H. PaineDouglas s ChanDaniel JiangAuld. palaniveluClint F. ChaplinPadam AflChangmin ParkCarl W. KainJungsoo parkMinho CheongNaveen K KakanMinyoung ParkMasato katoⅤ ijaykumar PatelNakjungDouglas KanBcminih. peirisLiwen chuRichard H. KennedyEldad perahiaTerry L. ColeJohn KenneJames e. petranovichRyon K. ColemanStuart 3. KerryAl PetrickCharles IJoonsuk kinFahd pirzadaTodor CooklevKyeongpyo KimJames d. portaroXavier p CostaSeong S. kimHenry s. PtasinskiDavid E CypherYongsan KimRene purnadiMarc de courvilleJarkko kneckChang w. PyoRolf J de vegtMark m. kobayashiEmily H QiTheodorus denteneerFumihide KojimaLuke QianJeremy de vriesTom KolzeHuyu QuSusan DickeyBruccp KJim e raabZhiming DingJohannes P KruysⅤ nuth raiYoshiharu doThomas KuehnelAli RaissiniaJohn dorseyThomas m. KuriharaHarish ramamurthyRoger P durandStephen G raymentSrinivasa duvvuriEdwin kwonLeonid razoumovDonald e. eastlakeZhou lanIvan reePeter Ecclesiaejeremy A landtEdward reussMichael ellisJoseph P. lauerAlex reznikStephen P. EmeottTae H. LeeRandal roebuckMarc emmelmannWooyoung leeJon walter rosdahlDarwin EngwerJoseph levyRichard royJoseph epsteinSheung liAlexander safonovⅤ inko ercegPaul linKazuyuki sakodaLars p. falkIlang liuHemanth sampathRobert fanfcllMichael livshitzKatsuyoshi SatoStefan fechterPeter LocHirokazu sawadaPaul h. feinberDaniel lubarDon schultzMatthew FischerAnthony f. maidaYongho SeokWayne k. FisherJakub majkowskiHuairong shaoRoberta fracchiAlastair MalarkyNeeraj sharmaRyuhei FundaJouni K. malinenStephen J ShellhammerMatthew gastAlexander maltsevlan SherlockJames p gilbBill marshallKai shiJeffrey gilbertRoman m. maslennikovShusaku shimadaReinhard GlogerSudheer mattaFrancois simonDavid goodallStephen Mc cannHarkirat SinghTugrul guenerJustin p mcnewGraham K. SmithJianlin gven meseckeMatt smithMark hamiltonRobert r. millerYoo-Seung SongC.J. HanseMichael monteKapil seBrian d. hartRajendra T. moortiVinay SridharaAmer A haHitoshi moriokaDorothy stanleⅤ egard hasselPeter MurrayAdrian P. StephensRobert f heileAndrew milesDavid S Stephenson〔 undo r. HertzRohit nabarCarl R. StevensonJunling hiJohn stineWendong huKengo nagataGuenaelt strutCopyright C 2009 IEEE. All rights reservedChin s SumGanesh VenkateHarry R. worstellEiji TakagiDalton t.Ⅴ ictorPengfei xiaMineo takaiGeorge A. vlantisAkira yamadaTcik-Khcong TanCssc r. walkerTakeshi yamamotoAllan thomsonunlWangmoya yamauraJerry thrasherngEric okuboCraig d. WarrenSu K. YongAlexander TolpinFujio WatanabeSeiji YoshioJason trachewskyPatrick WayeChristopher YoungSolomon b. traininMenzo m. wentinkArtur zaksRichard D. Van NeeFrank whettenHongyuan zhangAllert van zelstKyle williamsHuimin zhangMathieuⅤ arlet-AndmJames worshamJing zhiPrabodh varshneyJuan ZunigaContributions to this amendment was received from the following individualsBill ablⅵ inko ErcegPatrick labbeSantosh abrahamMustafa rozJoseph lauerTomoko adachiStefan fechterDongjun leeDmitry akhmetovPaul feinbergLin-Nan leeCarlos aldanaMatthew fischereeDave andrusGuido frederiksSok-kyu LeeMicha anholtTakashi FukagawaZhongding leiTsuguhide AokiPatrick FungJoseph levyYusuke asarEdoardo gallizioScott leyonhjelGeert awaterJames gardnerPen liDavid BaDevis gattSheung LiRaja banerjeaDavid HedbergYuan liKaberi banerieeGarth hillmanKevin liaoAmit bansalJin-Meng hoIsaac limGal bassonDale hocevarAlfred linAnui batraLouise hooAlbert liuJohn benkoMuhammad akramDer-Zheng liuMathilde benvenisteYasuhiko inoueMichael livshitzBjorn BjerkeKaz ishidaYufei BlakenshipTakashi ishidoshiroPeter LojkoDaniel borgesLakshmi lyerHui-Ling LouDouglas chanEric JacobsonAdina matacheJerry ChangYuh-Ren jauhLaurent mazetJohn ChangTaehyun JeonWilliam mcfarlandJeng-Hong ChenJari JokelaDarren mcnamaraStephen ChenVKJonesIrina medvedevYi-Ming ChenPadam AflArnaud meylanPei-ju ChiangNaveen KakaniMorgan mikFrancois chinSriniavs kandalaSeungwook minWoon Hau ChinAteet KapurPatrick mo上 mily chouAssaf KasherAndy molischLiwen chuMasato katoR. Tushar moortiKeith ChuggJohn KetchumMike moretonBrian ClassonJoonsuk KYuichi moriokaSean CoffeyPansop KimMarkus muckGabriella convertinoYoungsoo KimSyed Aon mujtabaMarc de courvilleGuenter KleindlAndrew mylesRolf de vegtKiyotaka KobayashiRohit nabarFranz dielacherCenk Koselhasa NagaiYoshiharu doiBruce p KraemerKengo NagataJohn deThomas KuehnelSeigo NakaodouglasTakushi KunihiroSanjiv nandaPeter ecclesiaeJoe KwakChiu nDarwin EngwerJoseph kwakAjit NimbalkerLeonid epsteinEdwin kwonGunnar NitscheCopyright C 2009 IEEE. All rights reservedHuaning NiuErik SchylanderRichard van neeIvan oakesMichael sealsNico van waesYoshihiro ohtanilual-Rong ShaoAllert van zelstEric OjardSuman sharmaAndres vila casadoTakeshi onizawaSteve shellhammerGeorgeⅵ lantisJob oostveenIan SherlockTimothy WakeleyFabio osnatoMasaaki shidaJesse walkerKafle padamTakashi shonoBrad wallacePratima paiSebastien SimoensMark wallaceArul palaniveluMassimiliano sitiRod waltonSubra parameswaraDoug SmithQi WThomas pareMatt smithXiaowen WangJean-Noel PatillonAmjadDeric WatersWei-Chung PengRobert staceyMark WebsterEldad perahiaAdrian P. StephensMenzo WentinkJim petranovichRichard WeseKrishna madhavan pillaiVictor StolpmanMike WilhoyteMadhavan pillaiSumei sunTimothy WongAngelo PoloniXiantao sunJames WoodyattNeeraj poojaryShravan surineniHenry ptasinskiIlan sutskoverAriton XhafaAleksandar PurkovicEiji Takagio xiaLuke oianMasahiro takasTomoya YamauraAli RaissiniaSeiichiro TakahashiEric YangSthanunathan ramakrishnanDaisuke takedaWen-Chang YehHarish RamamurthyTeik-Kheong TanChristopher YoungSridhar rameshYasuhiro TanakaHeejung YuRaffaele rivaStephan ten brinkArtur ZaksJon walter rosdahlGanesan ThiagarajanEldad zeiraStephanie Rouquette-LeveilEric OkuboHongyuan zhaMike rudeTim TowellJin ZhangJohn sadowskiJason trachewskyNing ZhangAtul salhotraSolomon traininQuan ZhouVincenzo scarpaDavid tungJohnny ZweigDonald schultzStefano valleJim syrenThe following members of the individual balloting committee voted on this amendment. Balloters may havevoted for approval, disapproval, or abstentionOsama aboulmagdBill cannonSouray duttaTomoko adachiJing CaoRichard eckardAlok AggarwalEdward CarlesCarl EklundThomas alexandeJames CarloStephen emeottRichard AlvinJuan CarreonMarc emmelmannEdward ChalfDarwin EngwcButch AntonDouglas s ChanJoseph epsteinDanilo antonelliKuor-Hsin ChangRobert fanfelleClint ChaplinShahin FarahaniDavid BagbyWei-Peng ChenShulan FengGabor BaikoYung-Mu ChenOddgeir FikstvedtMatthew ballHong ChengMatthew fischerRaja banerjeaAik ChindapoPrince francisVered BKeith ChowAvraham FreedmanJohn barrLiwen ChuDevon gaylePhilip beecherRyon ColemanMichael GeipelMathilde benvenisteCharles cookTheodore Georgantasharry bimsTodor CookiePieter -Paul giesbertsBjorn BjerkeHelge CowardJames gilbMonique brownJoseph decuirReinhard glogerRussell dietzMariana goldhamerWilliam byrdThomas dineenScrgiu gomaPctcr. calderonJohn dorseyDavid goodallCopyright C 2009 IEEE. All rights reserved
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自动控制原理470题
一些经典的习题 和课本的课后答案，是各位自学的必备之作内容提要本书是在李友誉编写的《身动控制原理200题》的基础上,又增加了哈尔滨工业大学出版社和科学出版社出版的《息动控制原理》的习题解答,共计470题。本书是高等院校“动控制原理”课程的教学辅助用书,与教学同步使用,还可供报考硕士研究生的考生复习备考使用图书在版编目[CP)数据自动控制原理470题/李友善等编.一2版.一哈尔滨:哈尔滨工业大学出版社,2002.4IsBN75603-1703-0I,自…Ⅱ.李…Ⅲ.自动控制理论-高等学校式题Ⅳ.T13-4中区版本图书馆CP数据核字(2002)第01737号出版袋行哈尔滨工业大学出版社杜址啥尔滨市南岗区教化衡2I号邮编15006传真451-86414749印剁哈尔滨市龙华印刷厂开本850×1168132印张13.25字数35千字版次200年4月第2版2003年11月第4次印刷书号rBN75603-1703-0/P-171印数19001-24000定份1500元再版前言本书是高等院校“动控制原理”课程的教学辅助用书,是与李友普教授主编的“自动控制原理”(国防工业出版社,修订版)鄢景华教授主编的“自动控制原理”(哈尔滨工业大学出版社,修订版)和梅晓榕教授主编的“自动控制原理”(科学出版社)等教材配套使用,并可供报考硕士研究生的考生应试复习用。本书第一篇是李友善教授编写的《自动控制原理200题》,是为李友善主编的《自动控制原理》一书配套编写的该书自1988年出版以来深受读者欢迎。第二篇是由梅晓榕和王彤编写的习题解答,该篇包含了由哈尔滨工业大学出版社出版的,由鄢景华主编的《自动控制原理》书中习题的解答和由科学出版社出版的,梅晓榕主编的《自动控制原理》-…书的补充题解答。书中不足之处,忌请读者批评指正。编者2003年11月前言本书是高等院校控制理论与应用、过程控制、工业电气自动化、工业仪表自动化、液压控制、计算机控制与应用等专业“自动控制原理课程的辅助教学用书,是与李友善主编的《自动控制原理》(国防工业出版社,修订版)一书配套编写的。全书共分八章,其中选编了在线性、非线性离散系统理论领域内典型性与概念性均较强的200个例题与习题。在每一章里,重点阐述了与该章内容有关的几个方面的基本概念问题,并通过具有代表性的例题较全面地介绍了解题的思路与步骤,说明分析问题与解决间题的基本方法。俾使读者通过阅读例题的解魉与习题的演算,深人掌握反馈控制的基本概念与基本分析方法书后附录给出了哈尔滨工业大学控制理论与应用专业19791986年度攻读硕士学位研究生人学考试《自动控制原理》试题汇编供报考硕士研究生的读者应试复习之用;附录中还给出了书中部分习题参考答案,供读者解题时参考。由于编者水平有限,书中的缺点与错误在所难免,恳请广大读者批评指正。编者987年5月于哈工大目录第一篇第一章关于传递函数的基本概念例题…………………(1习题■晋q甲如如如■·4甲甲·■山ψ=l昌昌山4如q…(24)第二章关于时域分析的基本概念例题…………………………………(29)习题争中■口■■ψψ;■bψ中●1■●电■■tψψψ啁p中导中ψ◆t自_曾pp■马中第三章关于根轨迹的基本概念例题(93第四章应用频率响应法分析控制系统的基本概念例题(95)习题124第五章应用频率响应法综合控制系统的基本概念例题(130)(150)第六章非线性系统分析的基本概念例习题……………………(175)第七章离散系统分析与综合的基本概念例(180)习题■_■【■■■■(196)第八章关于线性系统理论的基本概念例题…■『酽■甲冒旱冒■{晷【■习题…_d■(222)附录一哈尔滨工业大学自动控制原理研究生考试试题(979-1986)…嚼中ψ卓中ψ中q■24附录二部分习题参考答案甲督督日■鲁■■■■■ψ◆·↓嚼聊bψψ■山■■■■44■P(248)附录三附录一的试题参考答案……"……(262)第二篇第一章自动控制概论…………………(270)第二章控制系统的数学模型号中4◆中自中『4画(27I)第三章控制系统的时域分析第四章根轨迹法(299)第五章频率特性法…(303)第六章控制系统的综合与校正(326)第七章非线性控制系统……(338)第八章线性离散系统(359)第九章控制系统的状态空间分析法(372)第十章线性系统的状态空间综合法…………………(381补充题………:(391)附录四哈尔滨工业大学控制原理研究生考试试题19~1997及201)(398)附录四答案(411)参考书目上■卩4(415)2x十卡++十十十x第一篇Ⅹ+峰艹牛牛斗4+X第一章关于传递函数的基本概例题、根据传递函数定义求取二变量间的传递函数时,首先应明确二变量间的关系必须符合线性规律,其次要明确在零初始条件下取变量的拉普拉斯变换。例1求取图1-1(a)所示电路的传递数f(s)/B(s)图中p为铁心线圈磁链,R为线圈电阻。图1-1解描述铁心线图特性的微分方程式为R或dRi(1-1)其中磁链p(i)是流经线圈电流i的函数,如图1-1(b)所示,而dy(i)/代表y(i)曲线东各点的斜率从图1-1(b)可见,磁链φ是电流的非线性函数,因此dpy()/d是与变量i有关的变系数这样,方程(1-1)便不是线性微分方程式,当然也就不能对它取拉普拉斯变换,从而变量与t之间也就不存在传递函数。假若在某一工作点Q(如,l)上,电流讠=l±▲i的变化甚微,郎增量Ai很小,从前对应的磁链增量也很小,则在工作点Q(,)两侧的微小区域内便而视y(i)d为常值。因而方程(1-1)变成小偏差线性化意义下的线性微分方程式,具备了进行拉普拉斯变换的条件,其变换后的形式为du(i)[sI(s-i(o)+Ri(s=Usdy(ib+RdU(s(1-2)其中=i(0)工作点电流;dyfi在工作点Q两侧微小区域内的常值基于传递函数定义,欲由式(1-2)写出I()/U(s)形式,必须令l=0由此求得传递函数(s)/(s)为RU(s-Is+(1-3)式中Ty/R称为时间常数式(1-3)说明,传递函数必须在零初始条件下求取。否则,例如从式(12)使无法写出变量i与间然传递函数f(s)/U(s)。例2试求取图1-2(a)所示无源屯路的传递函数U0(s)/U(s)。2
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