LEADER 06154nam 22007092 450 001 9910452627603321 005 20151005020622.0 010 $a1-139-62483-0 010 $a1-107-23401-8 010 $a1-139-60844-4 010 $a1-139-60995-5 010 $a0-511-73618-5 010 $a1-139-61181-X 010 $a1-139-61553-X 010 $a1-299-40568-1 010 $a1-139-62111-4 035 $a(CKB)2550000001018051 035 $a(EBL)1099827 035 $a(OCoLC)833769201 035 $a(SSID)ssj0000856541 035 $a(PQKBManifestationID)12429296 035 $a(PQKBTitleCode)TC0000856541 035 $a(PQKBWorkID)10807892 035 $a(PQKB)11125772 035 $a(UkCbUP)CR9780511736186 035 $a(MiAaPQ)EBC1099827 035 $a(PPN)180083511 035 $a(Au-PeEL)EBL1099827 035 $a(CaPaEBR)ebr10679161 035 $a(CaONFJC)MIL471818 035 $a(EXLCZ)992550000001018051 100 $a20100329d2013|||| uy| 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aOFDMA mobile broadband communications $ea systems approach /$fJunyi Li, Qualcomm, Bridgewater, New Jersey, Xinzhou Wu, Qualcomm, Bridgewater, New Jersey, Rajiv Laroia, Sonus Networks$b[electronic resource] 210 1$aCambridge :$cCambridge University Press,$d2013. 215 $a1 online resource (xx, 519 pages) $cdigital, PDF file(s) 300 $aTitle from publisher's bibliographic system (viewed on 05 Oct 2015). 311 $a1-107-00160-9 320 $aIncludes bibliographical references and index. 327 $aContents; Foreword; Robert Calderbank; Preface; Why we wrote this book; Who will benefit from this book?; Acknowledgments; Notation; Variables; Functions; Abbreviations; General; LTE-specific; 1 Introduction; 1.1 Evolution towards mobile broadband communications; 1.2 System design principles of wireless communications; 1.3 Why OFDMA for mobile broadband?; 1.4 Systems approach and outline of the book; 2 Elements of OFDMA; 2.1 OFDM; 2.1.1 Tone signals; 2.1.2 Cyclic prefix; 2.1.3 Time-frequency resource; 2.1.4 Block signal processing; 2.2 From OFDM to OFDMA; 2.2.1 Basic principles 327 $a2.2.2 Comparison: OFDMA, CDMA, and FDMA2.2.3 Inter-cell interference averaging: OFDMA versus CDMA; 2.2.4 Tone hopping: averaging versus peaking; 2.2.5 Time-frequency synchronization and control; 2.2.6 Block signal processing; 2.3 Peak-to-average power ratio and SC-FDMA; 2.3.1 PAPR problem; 2.3.2 PAPR of OFDMA; 2.3.3 SC-FDMA and PAPR reduction; 2.3.4 Frequency domain equalization at the SC-FDMA receiver; 2.3.5 System aspects of SC-FDMA; 2.4 Real-world impairments; 2.4.1 Carrier frequency offset and Doppler effect; 2.4.2 Arrival time beyond the cyclic prefix; 2.4.3 Sampling rate mismatch 327 $aPhase noise2.4.4 I/Q imbalance; 2.4.5 Power amplifier nonlinear distortion; 2.5 Cross interference and self-noise models; 2.5.1 Cross interference and self-noise due to ICI; 2.6 Self-noise due to imperfect channel estimation; 2.6.1 Self-noise measurement via null pilot; 2.7 Summary of key ideas; 3 System design principles; 3.1 System benefits of OFDMA; Fading channel mitigation and exploitation; 3.2.1 Fading mitigation; 3.2.2 Fading exploitation; 3.2.3 Mitigation or exploitation?; 3.3 Intra-cell user multiplexing; 3.4 Inter-cell interference management 327 $a3.4.1 Interference averaging and active control3.4.2 Universal versus fractional frequency reuse; 3.5 Multiple antenna techniques; 3.5.1 System benefits; 3.5.2 OFDMA advantages; 3.6 Scheduling; 3.7 Network architecture and airlink support; 3.7.1 Unplanned deployment of base stations; 3.7.2 Mobile IP-based handoff; Summary of key ideas: evolution of system design principles; 4 Mitigation and exploitation of multipath fading; 4.1 Multipath fading channel; 4.1.1 Impulse response model; 4.1.2 Amplitude statistics; 4.1.3 Channel variation in time; 4.1.4 Channel variation in frequency 327 $a4.1.5 Gaussian-Markov model4.2 Communications, fading channel: single-user case; 4.2.1 Performance penalty due to multipath fading; 4.2.2 Mitigation of fading via channel state feedback; 4.2.3 Mitigation of fading via diversity; 4.2.4 Feedback or diversity; 4.3 Communications, fading channel: multiuser case; 4.3.1 Fading channel and multiuser diversity; 4.3.2 Exploring multiuser diversity in frequency and space; 4.3.3 Multiuser or single-user diversity; 4.4 Summary of key ideas; 5 Intra-cell user multiplexing; 5.1 Orthogonal multiplexing; 5.1.1 Orthogonal multiplexing in the perfect model 327 $a5.1.2 Orthogonal multiplexing in the cross interference model 330 $aWritten by the pioneers of Flash-OFDM, arguably the first commercially developed OFDMA-based mobile broadband system in the world, this book teaches OFDMA from first principles, enabling readers to understand mobile broadband as a whole. The book examines the key requirements for data-centric mobile; how OFDMA fits well with data networks; why mobile broadband needs to be IP-based; and how to bridge communications theory to real-world air interface design and make a good system choice between performance and complexity. It also explores the future of wireless technologies beyond conventional cellular architecture. One of the key challenges faced by newcomers to this field is how to apply the wireless communications theory and principles to the real world and how to understand sophisticated commercial systems such as LTE. The authors use their firsthand experience to help graduate students, researchers and professionals working on 4G to bridge the gap between theory and practice. 606 $aOrthogonal frequency division multiplexing 615 0$aOrthogonal frequency division multiplexing. 676 $a621.39/8 700 $aLi$b Junyi$f1969-$01052857 702 $aWu$b Xinzhou 702 $aLaroia$b Rajiv 801 0$bUkCbUP 801 1$bUkCbUP 906 $aBOOK 912 $a9910452627603321 996 $aOFDMA mobile broadband communications$92484368 997 $aUNINA LEADER 02883nam 22004092 450 001 9910825656203321 005 20190705144838.0 010 $a1-78330-355-7 035 $a(CKB)4100000007506871 035 $a(MiAaPQ)EBC5630874 035 $a(UkCbUP)CR9781783303557 035 $a(EXLCZ)994100000007506871 100 $a20190520d2019|||| uy| 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 14$aThe freedom of information officer's handbook /$fPaul Gibbons$b[electronic resource] 210 1$aLondon :$cFacet,$d2019. 215 $a1 online resource (xxii, 290 pages) $cdigital, PDF file(s) 300 $aTitle from publisher's bibliographic system (viewed on 02 Jul 2019). 311 $a1-78330-354-9 311 $a1-78330-353-0 330 $aFreedom of information (FOI) is now an international phenomenon with over 100 countries from Albania to Zimbabwe enacting the right to know for their citizens. Since 2005, the UK's Freedom of Information Act has opened up thousands of public bodies to unparalleled scrutiny and prompted further moves to transparency. This book provides a comprehensive guide to the practical management of freedom of information compliance, including interpretation of the Act as well as the Environmental Information Regulations. The UK Freedom of Information Act has now been in force for 12 years. Despite regular attempts to reform it most recently the government's establishment of an Independent FOI Commission in 2015/16 it has largely survived intact. This book documents best practice, the light that is cast by regulator guidance and case law, and the author's views on how FOI should be managed now that it has matured and become embedded in public authorities. It's hoped that the book will cement a positive approach to FOI in public bodies and help them to better meet their obligations. The Freedom of Information Officer's Handbook will be required reading for anyone responsible for, or involved with, managing compliance with FOI. The book will also cover FOI in other parts of the British Islands, so will be of interest to practitioners in the Isle of Man, Jersey, Scotland and Ireland. 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