实例介绍
【实例简介】
Cambridge.Next Generation Wireless LANs.802.11n and 802.11ac.2Ed.2013.pdf 英文
" The authors are renowned experts in the field The book is a m seeking knowledge of recent advances in WLan technologies, 'ust read for engineers Dr Osama Aboul-Magd: IeeE 802. llac Task group chair First edition of the book Next Generation Wireless lans by eldad and robert is xcellent and very popular. The second edition adds newly developed IEEE 802.llac standard with the same excellence in addressing technical features and easy to read writing style.” Vinko Erceg, Broadcom Corporation The 802. 11 standard has been evolving for over 20 years and now contains nearly 3000 pages of information. The authors have had direct involvement in writing many of those pages. This book represents a significant accomplishment in conveying and explaining the engineering behind the features for two of the most important radio options provided by the standard. Radio engineers approaching the standard for the first time as well as those already engaged in product development will find this text remarkably rewarding Bruce Kraemer, Marvell Semiconductor and Chair; IEEE 802 1/ Working Group This endorsement solely represents the views of the person who is endorsing this book and does not necessarily represent a position of either the company, the Ieee or the ieee standards association Next generation wireless lans 802.11nand802.11ac ELDAD PERAHIA Intel Corporation ROBERT STACEY apple ine CAMBRIDGE UNIVERSITY PRESS CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town Singapore, Sao Paulo, Delhi, Mexico City Cambridge University Press The edinburgh building Cambridge cB2 RU. UK Published in the United States of America by Cambridge University Press, New York www.cambridge.or Informationonthistitlewww.cambridge.org/9781107016767 o Cambridge University press 2008, 2013 This publication is in copyright. Subject to statutory exception and to the provisions of relevant collective licensing agreements, iction of any pa take place without the written permission of Cambridge University Press First published 2008 Reprinted with corrections 2010 Second edition 2013 Printed in the United Kingdom at the University Press, Cambridge A catalog record for this publication is available from the British Library Library of Congress Catalo Publication data Perahia. Eldad. 1967-author Next generation wireless LANS: 802.1ln, 802. 1lac, and Wi-Fi direct/Eldad Perahia, Intel Corporation, Robert Stacey, Apple Inc.-Second edition pages cm ISBN978-1-107-01676-7 hardback) Wireless LANS. I. Stacey, Robert, 1967-author. Il. Title TK5105.78P472013 621.398dc23 2012033809 IsBN 978-1-107-01676-7 Hardback Cambridge University Press has no responsibility for the persistence or accuracy of URls for external or third-party internet websites referred to in this publication, and does not guarantee that any content on such websites is, or will remain, accurate or appropriate To my wife Sarah and our son Nathan Eldad perahia To my wife Celia and son Zachary Robert Stacey Contents Foreword by Dr. Andrew Myles page xv Preface to the first edition XIX Preface to the second edition List of abbreviations XXII Chapter 1 Introduction 1 An overview of ieee 802.11 1. 1.1 The 802.11 MAC 1. 1. 2 The 802.11 PHYS 1.1.3 The 802.11 network architecture 1. 1. 4 Wi-Fi Direct 1.2 History of high throughput and 802.11n 1. 2. 1 The High Throughput Study Group 1334667780 1. 2.2 Formation of the High Throughput Task Group (tgn) 1. 2. 3 Call for proposals 1. 2. 4 Handheld devices 1. 2.5 Merging of proposals 1. 2. 6 802.11n amendment drafts 1.3 Environments and applications for 802.1In 12 1. 4 Major features of 802. 1In 14 1.5 History of Very High Throughput and 802. lac 1.6 Outline of chapters 20 References Part I Physical layer 25 Chapter 2 Orthogonal frequency division multiplexing 27 2. 1 Background 27 2.2 Comparison to single carrier modulation 29 References Contents Chapter 3 MIMO/SDM basics 32 3.1 SISO(802.1la/g) background 3.2 MiMO basics 32 3.3 SDM basics 3.4 MIMO environment 36 3.5 802.1In and 802. 1lac propagation model 38 3.5.1 Impulse response 39 3.5.2 Antenna correlation 42 3.5.3 802. 1In Doppler model 45 3.5.4 802. llac Doppler model 46 3.5.5 Physical layer impairments 47 3.5.6 Path loss 50 3.6 Linear receiver design 51 3.7 Maximum likelihood estimation 54 References 56 Appendix 3. 1 802. 1In channel models Chapter 4 PHY interoperability with 11a/g legacy OFDM devices 4.1 1la packet structure review 4. 1. I Short Training field 62 4.1.2 Long Training field 65 4.1.3 Signal field 68 4.1.4 Data field 4.1.5 Packet encoding process 70 4.1.6 Receive procedure 4.2 Mixed format high throughput packet structure 74 4.2.1 Non-HT portion of the Mf preamble 75 4.2.2 HT portion of the Mf preamble 81 4.2.3 Data field 88 4.2.4 HT MF receive procedure 96 References 102 Appendix 4.1 20 MHz basic MCs tables 103 Chapter 5 High throughput 105 5.1 40 MHz channel 105 5.1.1 40 MHz subcarrier design and spectral mask 106 5.1.2 40 MHz channel design 108 5.1.3 40 MHz mixed format preamble 108 5.1.4 40 MHz data encoding 113 5.1.5 MCS 32: high throughput duplicate form 116 5. 1.6 20/40 MHz coexistence with legacy in the Phy 5.1.7 Performance improvement with 40 MHz 120 Contents X 5.2 20 MHz enhancements additional data subcarriers 121 5.3 MCS enhancements: spatial streams and code rate 5.4 Greenfield (GF) preamble 127 5.4.1 Format of the gf preamble 128 5.4.2 PHY efficiency 130 5.4.3 Issues with gF 130 5. 4. 4 Preamble auto-detection 134 5.5 Short guard interval 136 References 140 appendix 5. 1 Channel allocation 141 Appendix 5.2 40 MHz basic MCS tables 141 ppendix 5.3 Physical layer waveform parameters 146 Chapter 6 Robust performance 147 6.1 Receive diversity 147 6. 1. 1 Maximal ratio combining basics 148 6. 1. 2 MIMO performance improvement with receive diversity 149 6.1.3 Selection diversity 152 6.2 Spatial expansion 152 6.3 Space-time block coding 152 6.3. 1 Alamouti scheme background 153 6.3.2 Additional stbc antenna configurations 156 6.3.3 STBC receiver and equalization 159 6.3.4 Transmission and packet encoding process with STBC 161 6. 4 Low density parity check codes 164 6.4.1 LDPC encoding process 165 6.4.2 Effective code rate 175 6.4.3 LDPC coding gain 176 References 177 Appendix 6.1 Parity check matrices 177 Chapter 7 Very High Throughput PHY 182 7. 1 Channelization 18 7.2 Single user (SU)VhT packet structure 184 7.3 VHT format preamble 185 7.3.1 Non- Vht portion of the VhT format preamble 185 7.3.2 VhT portion of the VhT format preamble 191 7.3. 3 vht data field 200 7.4 Modulation coding scheme 212 References 217 【实例截图】
【核心代码】
Cambridge.Next Generation Wireless LANs.802.11n and 802.11ac.2Ed.2013.pdf 英文
" The authors are renowned experts in the field The book is a m seeking knowledge of recent advances in WLan technologies, 'ust read for engineers Dr Osama Aboul-Magd: IeeE 802. llac Task group chair First edition of the book Next Generation Wireless lans by eldad and robert is xcellent and very popular. The second edition adds newly developed IEEE 802.llac standard with the same excellence in addressing technical features and easy to read writing style.” Vinko Erceg, Broadcom Corporation The 802. 11 standard has been evolving for over 20 years and now contains nearly 3000 pages of information. The authors have had direct involvement in writing many of those pages. This book represents a significant accomplishment in conveying and explaining the engineering behind the features for two of the most important radio options provided by the standard. Radio engineers approaching the standard for the first time as well as those already engaged in product development will find this text remarkably rewarding Bruce Kraemer, Marvell Semiconductor and Chair; IEEE 802 1/ Working Group This endorsement solely represents the views of the person who is endorsing this book and does not necessarily represent a position of either the company, the Ieee or the ieee standards association Next generation wireless lans 802.11nand802.11ac ELDAD PERAHIA Intel Corporation ROBERT STACEY apple ine CAMBRIDGE UNIVERSITY PRESS CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town Singapore, Sao Paulo, Delhi, Mexico City Cambridge University Press The edinburgh building Cambridge cB2 RU. UK Published in the United States of America by Cambridge University Press, New York www.cambridge.or Informationonthistitlewww.cambridge.org/9781107016767 o Cambridge University press 2008, 2013 This publication is in copyright. Subject to statutory exception and to the provisions of relevant collective licensing agreements, iction of any pa take place without the written permission of Cambridge University Press First published 2008 Reprinted with corrections 2010 Second edition 2013 Printed in the United Kingdom at the University Press, Cambridge A catalog record for this publication is available from the British Library Library of Congress Catalo Publication data Perahia. Eldad. 1967-author Next generation wireless LANS: 802.1ln, 802. 1lac, and Wi-Fi direct/Eldad Perahia, Intel Corporation, Robert Stacey, Apple Inc.-Second edition pages cm ISBN978-1-107-01676-7 hardback) Wireless LANS. I. Stacey, Robert, 1967-author. Il. Title TK5105.78P472013 621.398dc23 2012033809 IsBN 978-1-107-01676-7 Hardback Cambridge University Press has no responsibility for the persistence or accuracy of URls for external or third-party internet websites referred to in this publication, and does not guarantee that any content on such websites is, or will remain, accurate or appropriate To my wife Sarah and our son Nathan Eldad perahia To my wife Celia and son Zachary Robert Stacey Contents Foreword by Dr. Andrew Myles page xv Preface to the first edition XIX Preface to the second edition List of abbreviations XXII Chapter 1 Introduction 1 An overview of ieee 802.11 1. 1.1 The 802.11 MAC 1. 1. 2 The 802.11 PHYS 1.1.3 The 802.11 network architecture 1. 1. 4 Wi-Fi Direct 1.2 History of high throughput and 802.11n 1. 2. 1 The High Throughput Study Group 1334667780 1. 2.2 Formation of the High Throughput Task Group (tgn) 1. 2. 3 Call for proposals 1. 2. 4 Handheld devices 1. 2.5 Merging of proposals 1. 2. 6 802.11n amendment drafts 1.3 Environments and applications for 802.1In 12 1. 4 Major features of 802. 1In 14 1.5 History of Very High Throughput and 802. lac 1.6 Outline of chapters 20 References Part I Physical layer 25 Chapter 2 Orthogonal frequency division multiplexing 27 2. 1 Background 27 2.2 Comparison to single carrier modulation 29 References Contents Chapter 3 MIMO/SDM basics 32 3.1 SISO(802.1la/g) background 3.2 MiMO basics 32 3.3 SDM basics 3.4 MIMO environment 36 3.5 802.1In and 802. 1lac propagation model 38 3.5.1 Impulse response 39 3.5.2 Antenna correlation 42 3.5.3 802. 1In Doppler model 45 3.5.4 802. llac Doppler model 46 3.5.5 Physical layer impairments 47 3.5.6 Path loss 50 3.6 Linear receiver design 51 3.7 Maximum likelihood estimation 54 References 56 Appendix 3. 1 802. 1In channel models Chapter 4 PHY interoperability with 11a/g legacy OFDM devices 4.1 1la packet structure review 4. 1. I Short Training field 62 4.1.2 Long Training field 65 4.1.3 Signal field 68 4.1.4 Data field 4.1.5 Packet encoding process 70 4.1.6 Receive procedure 4.2 Mixed format high throughput packet structure 74 4.2.1 Non-HT portion of the Mf preamble 75 4.2.2 HT portion of the Mf preamble 81 4.2.3 Data field 88 4.2.4 HT MF receive procedure 96 References 102 Appendix 4.1 20 MHz basic MCs tables 103 Chapter 5 High throughput 105 5.1 40 MHz channel 105 5.1.1 40 MHz subcarrier design and spectral mask 106 5.1.2 40 MHz channel design 108 5.1.3 40 MHz mixed format preamble 108 5.1.4 40 MHz data encoding 113 5.1.5 MCS 32: high throughput duplicate form 116 5. 1.6 20/40 MHz coexistence with legacy in the Phy 5.1.7 Performance improvement with 40 MHz 120 Contents X 5.2 20 MHz enhancements additional data subcarriers 121 5.3 MCS enhancements: spatial streams and code rate 5.4 Greenfield (GF) preamble 127 5.4.1 Format of the gf preamble 128 5.4.2 PHY efficiency 130 5.4.3 Issues with gF 130 5. 4. 4 Preamble auto-detection 134 5.5 Short guard interval 136 References 140 appendix 5. 1 Channel allocation 141 Appendix 5.2 40 MHz basic MCS tables 141 ppendix 5.3 Physical layer waveform parameters 146 Chapter 6 Robust performance 147 6.1 Receive diversity 147 6. 1. 1 Maximal ratio combining basics 148 6. 1. 2 MIMO performance improvement with receive diversity 149 6.1.3 Selection diversity 152 6.2 Spatial expansion 152 6.3 Space-time block coding 152 6.3. 1 Alamouti scheme background 153 6.3.2 Additional stbc antenna configurations 156 6.3.3 STBC receiver and equalization 159 6.3.4 Transmission and packet encoding process with STBC 161 6. 4 Low density parity check codes 164 6.4.1 LDPC encoding process 165 6.4.2 Effective code rate 175 6.4.3 LDPC coding gain 176 References 177 Appendix 6.1 Parity check matrices 177 Chapter 7 Very High Throughput PHY 182 7. 1 Channelization 18 7.2 Single user (SU)VhT packet structure 184 7.3 VHT format preamble 185 7.3.1 Non- Vht portion of the VhT format preamble 185 7.3.2 VhT portion of the VhT format preamble 191 7.3. 3 vht data field 200 7.4 Modulation coding scheme 212 References 217 【实例截图】
【核心代码】
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Cambridge.Next Generation Wireless LANs.802.11n and 802.11ac.2Ed.2013.pdf
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