登录
首页 » Others » 处理机调度算法实现(文档+代码)

处理机调度算法实现(文档+代码)

于 2020-12-05 发布
0 375
下载积分: 1 下载次数: 3

代码说明:

在OS中调度的实质是一种资源分配,因而调度算法是指:根据系统的资源分配策略所规定的资源分配算法。对于不同的操作系统和系统目标,通常采用不同的调度算法,例如,在批处理系统中,为了照顾为数众多的短作业,应采用短作业优先的调度算法;又如在分时系统中,为了保证系统具有合理的响应时间,应采用轮转法进行调度。目前存在的多种调度算法中,有的算法适用于作业调度,有的算法适用于进程调度;但也有些调度算法既可用于作业调度,也可用于进程调度[1] 。处理机调度常用的算法有:先来先服务算法,高响应比优先算法,时间片轮转算法和短作业优先调度算法。本次课程设计就将模拟先来先服务,时间片轮转,短作业优先,高响应比优先4种调

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • 拉丁超立方抽样 matlab代码
    拉丁超立方的抽样程序,任意维度,任意抽样范围,及抽样个数设置
    2020-11-28下载
    积分:1
  • lle算法详解及matlab代码实现
    给出了 lle算法的详细解析及matlab代码实现
    2020-12-04下载
    积分:1
  • STM32F103VET6_STM32F407VET6.SCH
    【实例简介】STM32F103VET6 STM32F407VET6 DXP格式SCH档
    2021-11-30 00:50:26下载
    积分:1
  • uniapp程序源码.rar
    【实例简介】这是本人在使用uniapp开发APP或者微信小程序时的框架,包含个人中心和启动页广告,以及登录等界面。开发者直接使用此框架,在此基础上开发自己的内容。后台网址也写了一些,大家可以更换自己服务器网址,我本人后台是用php写的。分享给大家~
    2021-12-02 00:43:45下载
    积分:1
  • 数字信号处理课程设计--基于MATLAB有噪声语音信号处理
    滤波器设计在数字信号处理中占有极其重要的地位,FIR数字滤波器和IIR滤波器是滤波器设计的重要组成部分。利用MATLAB信号处理工具箱可以快速有效地设计各种数字滤波器。课题基于MATLAB有噪音语音信号处理的设计与实现,综合运用数字信号处理的理论知识对加噪声语音信号进行时域、频域分析和滤波。通过理论推导得出相应结论,再利用 MATLAB 作为编程工具进行计算机实现。在设计实现的过程中,使用窗函数法来设计FIR数字滤波器,用巴特沃斯、切比雪夫和双线性变法设计IIR数字滤波器,并利用MATLAB 作为辅助工具完成设计中的计算与图形的绘制。
    2021-05-06下载
    积分:1
  • 分水岭算法
    介绍分水岭算法的原理,几个小例子。及区域合并的方法!
    2021-05-07下载
    积分:1
  • U盘文件复制专家【后台自动复制USB设备】 V2.0.0 简体中文绿色免费版
    U盘文件复制专家运行本软件后,会自动在后台监控USB接口,当有U盘、MP3、MP4、手机存储卡等移动存储设备插入时,会按照预先定义的规则自动拷贝存储器内的文件!与目前同功能软件相比,本软件有如下特性:A.按日期时间生成文件夹,保证所拷贝U盘的文件目录树为原样,方便查看B.不锁定U盘,拷贝完成U盘弹出自如。同类软件在拷贝完文件之后,无法正常弹出U盘C.可选开机自动运行D.自定义拷贝的文件类型,合理选择所需E.自定义拷贝的文件大小,合理选择所需F.支持热键呼出,热键退出,方便快捷。打开界面热键:Alt+Shift+S 退出热键:Ctrl+Alt+E【注意】A.在本机配置好开
    2020-12-09下载
    积分:1
  • Principles of Mobile Communication Third Edition
    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
    2020-12-09下载
    积分:1
  • 卷积神经网络的matlab程序
    卷积神经网络的matlab程序,带有解析
    2020-05-23下载
    积分:1
  • 张文彤spss统计分析教程全套资料-高级教程所用数据集
    张文彤spss统计分析教程全套资料-高级教程所用数据集张文彤spss统计分析教程全套资料-高级教程所用数据集
    2020-12-04下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载