飞行器惯性导航Matlab仿真实现

波速方向图，阵列数为10 在u空间和theta空间作出相应的波束方向图，图像效果良好。

源代码均已调试通过，并说明编程环境用VHDL实现的三位密码锁，可实现设置、上锁、解锁、输入三次错误即报警等基本功能，内含仿真文件。

Gordon L. Stüber著，为英文原文第三版。其第二版已经翻译成中文，即为移动通信原理（第二版），由电子工业出版社出版，但翻译水平很差。Gordon L. StuberPrinciples of mobileCommunicationThird edition② SpringerGordon L. StuberGeorgia Institute of TechnologyAtlanta gaUSAstuber @ece gatech. eduISBN978-1-4614-0363-0e-ISBN978-1-46140364-7DOI10.1007/978-1-46140364-7Springer New York Dordrecht Heidelberg londonLibrary of Congress Control Number: 2011934683C Springer Science+Business Media, LLC 2002, 2011All rights reserved. This work may not be translated or copied in whole or in part without the writtenpermission of the publisher(Springer Science+ Business Media, LLC, 233 Spring Street, New York,NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis. Use inconnection with any form of information storage and retrieval, electronic adaptation, computer softwareor by similar or dissimilar methodology now known or hereafter developed is forbiddenThe use in this publication of trade names, trademarks, service marks, and similar terms, even if they arenot identified as such, is not to be taken as an expression of opinion as to whether or not they are subjectto proprietary rightsPrinted on acid-free paperSpringerispartofSpringerScience+businessMedia(www.springer.com)To Alana, our son nickolasmy father lothar Stuiberand my late mother Beatrice stiiberPrefacePrinciples of Mobile Communication, third edition, is a major revision of thesecond edition. Like its earlier editions, this book provides a mathematicallyrigorous overview of physical layer wireless communications. The basic pedagogicmethodology is to include fully detailed derivations from first principles. The text isintended to provide enough principle material to guide the novice student, whilit the same time having plenty of detailed material to satisfy graduate studentsinclined to pursue research in the area. The book is intended to stress the principlesof wireless communications that are applicable to a wide array of wireless standardsIt is intended to serve as a textbook and reference for graduate students, and a usefulreference for practicing engineersOrganization of the bookChapter 1 begins with an overview that is intended to introduce a broad array ofissues relating to wireless communications. Included is a brief description of theevolution of various wireless standards, the basic concepts of cellular frequencyreuse, the land mobile radio propagation environment, link budgets, and coverageand capacity of cellular radio systemsChapter 2 provides an extensive treatment of radio propagation, since goodunderstanding of the physical wireless channel is essential for the developmentand deployment of wireless systems. The chapter begins with a treatment ofthe narrow-band faded envelope for conventional fixed-to-mobile channels foundin cellular radio systems, mobile-to-mobile channels found in mobile ad henetworks, and multiple-input multiple-output (MIMO) channels where multipleantennas are used at both the transmitter and receiver to achieve high capacity afterconsidering the narrow-band channel, we consider the statistical treatment of wide-band channels. The emulation of wireless channels is essential for the developmentand testing of wireless systems, and the chapter provides a detailed discussion ofchannel simulation techniques. Finally, the chapter concludes with a discussion ofshadowing and path loss models for land mobile radio environmentsPreraceChapter 3 provides a detailed treatment of co-channel interference which is therimary impairment in spectrally efficient cellular frequency reuse systems. Veryoften the receivers in such systems are affected by multiple co-channel interferersand the probability distribution of the total interfering power is considered. Thchapter also considers the link outage performance due to co-channel interferencein a variety of wireless environmentsChapter 4 covers the various types of modulation schemes that are used in mobilecommunication systems along with their spectral characteristics. The chapter beginswith the mathematical representation of bandpass modulated signals, along withNyquist pulse shaping. Later, a large variety of modulation schemes used in wirelesssystems are considered, including both single-carrier and multi-carrier modulation,and both linear and nonlinear modulation techniques This is followed by a treatmentof the power density spectrum of modulated signals. Although quite mathematicalin nature, power spectrum is an important topic, since wireless systems are requiredto operate within a specified out-of-band emission maskChapter 5 discusses the error probability performance of various digital modulation schemes on narrow-band fat fading channels. The performance is evaluatedwith a variety of receiver structures, including coherent detectors, differentialcoherent detectors and noncoherent detectorsChapter 6 includes a treatment of multi-antenna techniques for combatingenvelope fading. The chapter includes a discussion of various diversity combiningtechniques for coherent, differentially coherent, and noncoherent receiver detectionof signals on fading channels with additive white gaussian noise. also consideredis optimal combining which is effective when the primary additive impairment isco-channel interference rather than noise. Finally, the chapter considers the use ofmultiple antennas at the transmitter in the context of classical beam-forming andtransmit diversityChapter 7 provides an extensive treatment of digital signaling on intersymbolinterference(ISI) channels that are typical of broadband land mobile radio systemsThe chapter begins with the characterization of Isi channels and goes on todiscuss techniques for combating ISI based on symbol-by-symbol equalization andsequence estimation. Later, error probability for maximum likelihood sequenceestimation is considered. The chapter concludes with a discussion of co-channeldemodulation for the purpose of mitigating co-channel interference on Isi channelsChapter 8 covers error control coding techniques for wireless systems. Thechapter begins with a discussion of basic block coding including space-time blockcodes Convolutional coding is considered next along with the Viterbi and BCJRalgorithms for decoding convolutional codes, followed by trellis coded modulationThe chapter then provides a detailed discussion on the design and performanceanalysis of convolutional and trellis codes for awgn channels, and interleaved fatfading channels, and fading isi channels. Later, space-time trellis codes are treatedand the chapter concludes with Turbo codinChapter 9 is devoted to spread spectrum techniques The chapter begins with anintroduction to direct sequence and frequency hop spread spectrum. This is followedy a detailed treatment of spreading sequences. Also included is a discussionPrefaceof the effects of tone interference on direct sequence spread spectrum, and theRAKE receiver performance on wide-band channels. The chapter wraps up witha discussion of cdma multiuser detectionChapter 10 is devoted to multi-carrier techniques. It considers the performanceof ofdm on frequency-selective channels and considers the effect of residualISI and problem of residual ISI cancellation. Later, the chapter examines singlecarrier frequency-domain equalization(SC-FDE)techniques. This is followed by atreatment of orthogonal frequency division multiple access (OFDMA)on both theforward and reverse links. The chapter concludes with a discussion of single-carrierfrequency division multiple acceSs (SC-FDMA)Chapter 11 considers frequency planning techniques for cellular systems. Thechapter begins with a discussion of cell sectoring, cell splitting, and reuse partition-ing. Later, the chapter considers radio planning for OFDMa cellular systems. Thisis followed by hierarchical overlay/underlay architectures based on cluster planningFinally, the chapter wraps up with macrodiversity TDMA cellular architecturesChapter 12 considers CDMa considers CDMA cellular systems, consideringtopics such as capacity and power control This is followed by a discussion ofhierarchical macrodiversity CDMa architectures and their performanceChapter 13 is devoted to cellular radio resource management. The chapter beginswith an introduction to basic hard and soft handoff. Later, the chapter considers theimportant problem of link quality evaluation, including signal strength averaging,velocity estimation, and velocity adaptive hard handoff algorithms later, a detailedanalysis of hard and soft handoff is provided. Finally, the chapter wraps up withmethods for estimating received carrier-to-interference plus noise ratio(CINR)The Appendix includes a brief and focused tutorial discussion of probabilityand random processes. A good understanding of the material in the Appendix isessential, since the concepts are widely used throughout the textUSing This Book for InstructionThe book has been developed from a graduate-level course on physical wirelesscommunications that I have taught at Georgia Tech since 1993. Normally, I prefera graduate-level course in digital communications as a prerequisite for this courseHowever, such a prerequisite may be waived to the extent that there is extensivebackground material in each chapter. A course may cover the introductory materialin each chapter and skip the more specialized material. In my own classes, I alwaystry to judge the mathematical level of the students early and adapt accordinglyThe book obviously contains far too much material to be taught in a onesemester course. However, i believe that it can serve as a suitable text in mostsituations through the appropriate instructor selection of background sections. Myown preference for a one semester course is to include the following material inorder: Chap. 1, Chap 2(skipping the more advanced material), and the first twosections of Chap 3. In moving to modulation waveforms in Chap. 4, an instructormay have to treat/assume basic signal-space representation. However, most students

网络ns2仿真实验分析(RED、丢包率、端到端延迟、吞吐量)附源码分组的端口号。(10) dst addr:目的地址,格式为 node port,其中node代表分组发送节点的id,pot表示发送分组的端口号。(11) seg num:分组的序列号。(12) okt id:分组的唯标识符。3n2与n3之间的RED队列的半均队列长度与当前队列长度随时间的变化如下图所示:torrent and ave"吧 e PED CueL旧300era已n15000ANA图2平均队列长度与当前队列长度随时问变化的曲线图4运行结果中显示CBR流量总共发包550,丢失16,丢包率为:0.029。丢包率随时间的变化如下图所示:packets of lost rate。045graph自04,03500自020.015图3丢包率随时间变化的关系图5CBR流量的吋延随时间的变化如下图所示:1u彐r10.14心01Q。0图4端到端时延随时间变化的关系图6.节点n2的平均吞吐量随时间的变化如下图所示100T图5节点n2的吞吐量随时间变化的关系头7.结果分析:从RED的图示中,可以看出队列的大小波动变化不是很大,在处理突发的包时冇一定的优势。从丟包率、时延和吞吐量的变化图中,可以看出当丟包率增加时,端到端之问的时延也在增加,而吞吐量则下降,丟包率、时延和吞吐量在表示网络性能的好坏时有一定的关系、相关代码1.络拓扑仿真脚木 simulator:tcl:#Create a simulator objectset ns [new Simulator]#Define different colors for data flows for NAM)Sns color 1 BlueSns color 2#Open the nam trace fileset nt lopen out. nam wSns namtrace-all Snfset nd [open out. tr wISns trace-all Snd#Define a finish procedureproc finish仆}{global ns nf ndSns flush-traceclose Snfclose sndexec nam out. namkit o#Create four nodesset no [Sns node]et n1 [Sns nodelset n2 [Sns nodeset n3 [ns node]#Create links between the nodesSns duplex-link Sn0 Sn2 2Mb 10ms DropTailSns duplex-link Sn1 Sn2 2Mb 10ms DropTailSns duplex- link Sn2 Sn3 1.7Mb 20ms RED#Set queue Size of link (n2-n3 to 100Sns queue-limit Sn2 Sn 3 100#Give node position(for NAm)Sns duplex-link-op SnO Sn2 orient right-downSns duplex-link-op Sn1 Sn2 orient right-upSns duplex-link-op $n2 Sn3 orient right#Monitor the queue for link(n2-n3 .( for NAM)Sns duplex-link-op Sn2 Sn 3 queuePos 0.5#Setup a TCP connectionset tcp new Agent/TCPISns attach-agent Sno Stcpset sink [new Agent/TCPSinkSns attach-agent sn3 SinkSns connect stcp SinkStcp set fid 1#Setup a FTP over TCP connectionset ftp [new Application/FTPlSftp attach-agent StcpSftp set type FTPfsetup a UdP connectionset udp [new Agent/UDP]Sns attach-agent Sn1 udpset null [new Agent/Nul]Sns attach-agent Sn3 SnullSns connect Udp SnullUdp set fid_ 2#Setup a CBr over UDP connectionset cbr [new application/Traffic/ CBRIScbr attach-agent UdpScbr set type CBrScbr set packet size 1000Scbr set rate 1mbScbr set random false#Schedule events for the cbr and ftp agentsSns at0.1 Scbr startSns at 1.0"Sftp start"Sns at 40.0"Sftp stop"Sns at 4.5"Scbr stop"#Detach tcp and sink agentsSns at 50 Sns detach-agent $no stcp; Sns detach-agent sn3 Sink"Sns at 50.0 finish#monitor n2 and n3 queueset redg [[sns link Sn2 Sn3] queueset traceq lopen redQueue tr wSredg trace curgSredg trace aveSredg attach Strace#Run the simulationns rur2.RED的数据处理脚本:SgreparedQueue. tr>averagetrStrep“Q" reqUeuetr> current tr(中 reqUeue tr为跟踪n2和n3队列产生的文件)然后使用 gnuplot工具使用 average tr和 current, tr绘制队列随时间变化的曲线3.丢包率数据awk处理脚本 graph rostRate,awvk#count the packet lost rate of cBri=0;vente=S2;from Node =$3toNode=s4:pitT$7srcAddr=$9dstAddr=$10gNum = $11if (fromNode ==1 & toNode ==2&& event==+i totalNum++timeArr[i=timesrate[i]= float)(drop Num/tif(fid==2&& event==d")dropNum++ENDprintf("#number of packet sent: %od, lost: %d"totalNum, dropNum)printf( #lost rate of packets: %f",dropNum/totalNumfor(j=0; j

css角点详述，中科院使用教程，非常有帮助的

此matlab代码包括对QPSK, 16PSK等M-PSK和QAM, 16QAM, 32QAM， 64QAM, 128QAM等M-QAM调制方式的蒙特卡罗法仿真和与理论结果的对比，画出了星座图，Eb/N0，Es/N0为横坐标时的信道容量曲线。

【实例简介】

对鸢尾花数据进行分类，使用KNN算法，可直接在matlab上运行。

社区物业管理信息系统，该系统的用户分别是：业主和社区物业管理员。不同的用户拥有不同的权限，各自完成各自的管理功能，不同的用户看到不同的系统功能。

根据马尔科夫场图像去噪，matlab代码，是模式识别与机器学习第八章8.3例子的代码。参考书籍PRML.博客http://www.cnblogs.com/Dzhouqi/p/3207601.html