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Informationen zum Autor Keith Q.T. Zhang, electronics engineer, educator. Achievements include research in wireless communications. Member of Institute of Electrical and Electronics Engineers (associate editor letters 2000-2008). B. England, Tsinghua University, Beijing, 1970. Doctor of Philosophy, McMaster University, Hamilton, Ontario, Canada, 1985. Senior member technical staff Spar Aerospace Ltd, Satellite Communications Division, Montreal, 1991-1993. Professor Ryerson, Toronto, Canada, 1993-2002, City University, Hong Kong, since 2000. Klappentext Understand the mechanics of wireless communicationWireless Communications: Principles, Theory and Methodology offers a detailed introduction to the technology. Comprehensive and well-rounded coverage includes signaling, transmission, and detection, including the mathematical and physics principles that underlie the technology's mechanics. Problems with modern wireless communication are discussed in the context of applied skills, and the various approaches to solving these issues offer students the opportunity to test their understanding in a practical manner. With in-depth explanations and a practical approach to complex material, this book provides students with a clear understanding of wireless communication technology."Provides the reader with an overall picture of wireless communications, carefully expounds its technical details, not only covering a variety of main results and conclusions but also revealing the methodology used for their derivations"-- Inhaltsverzeichnis Preface xvii Acknowledgments xix 1 Introduction 1 1.1 Resources for wireless communications 3 1.2 Shannon's theory 3 1.3 Three challenges 4 1.4 Digital modulation versus coding 5 1.5 Philosophy to combat interference 6 1.6 Evolution of processing strategy 7 1.7 Philosophy to exploit two-dimensional random fields 7 1.8 Cellular: Concept, Evolution, and 5G 8 1.9 The structure of this book 10 1.10 Repeatedly used abbreviations and math symbols 10 Problems 12 References 12 2 Mathematical Background 14 2.1 Introduction 14 2.2 Congruence mapping and signal spaces 14 2.3 Estimation methods 19 2.3.1 Maximum likelihood estimation (MLE) 20 2.3.2 Maximum a posteriori estimation 21 2.4 Commonly used distributions in wireless 21 2.4.1 Chi-square distributions 21 2.4.2 Gamma distribution 25 2.4.3 Nakagami distribution 26 2.4.4 Wishart distribution 26 2.5 The calculus of variations 28 2.6 Two inequalities for optimization 29 2.6.1 Inequality for Rayleigh quotient 29 2.6.2 Hadamard inequality 29 2.7 Q-function 30 2.8 The CHF method and its skilful applications 32 2.8.1 Gil-Pelaez's lemma 32 2.8.2 Random variables in denominators 32 2.8.3 Parseval's theorem 33 2.9 Matrix operations and differentiation 33 2.9.1 Decomposition of a special determinant 33 2.9.2 Higher order derivations 33 2.9.3 Kronecker product 34 2.10 Additional reading 34 Problems 34 References 35 3 Channel Characterization 37 3.1 Introduction 37 3.2 Large-scale propagation loss 38 3.2.1 Free-space propagation 39 3.2.2 Average large-scale path loss in mobile 40 3.2.3 Okumura's model 40 3.2.4 Hata's model 42 3.2.5 JTC air model 42 3.3 Lognormal shadowing 43 3.4 Multipath characterization for local behavior 44 3.4.1 An equivalent bandwidth 44 3.4.2 Temporal evolution of path coefficients 49 3.4.3 Statistical description of local fluctuation 50 3.4.4 Complex Gaussian distribution 50 3.4.5 Nakagami fading 51 3.4.6 Clarke-Jakes model 52 3.5 Composite model to incorporate multipath and shadowing 53 <...
