Contents
The numbers in parentheses after section titles identify previous sections that contain the minimum prerequisite
material.
Chapter 1
Introduction 1
1.1 Elements and Limitations
of Communication Systems 2
Information, Messages, and Signals 2
Elements of a Communication System 3
Fundamental Limitations 5
1.2 Modulation and Coding 6
Modulation Methods 6
Modulation Benefits and Applications 8
Coding Methods and Benefits 11
1.3 Electromagnetic Wave Propagation Over
Wireless Channels 12
RF Wave Deflection 14
Skywave Propagation 14
1.4 Emerging Developments 17
1.5 Societal Impact and Historical
Perspective 20
Historical Perspective 21
1.6 Prospectus 24
Chapter 2
Signals and Spectra 27
2.1 Line Spectra and Fourier Series 29
Phasors and Line Spectra 29
Periodic Signals and Average Power 33
Fourier Series 35
Convergence Conditions and Gibbs
Phenomenon 39
Parseval’s Power Theorem 42
2.2 Fourier Transforms and Continuous Spectra
(2.1) 43
Fourier Transforms 43
Symmetric and Causal Signals 47
Rayleigh’s Energy Theorem 50
Duality Theorem 52
Transform Calculations 54
2.3 Time and Frequency Relations (2.2) 54
Superposition 55
Time Delay and Scale Change 55
Frequency Translation and Modulation 58
Differentiation and Integration 60
2.4 Convolution (2.3) 62
Convolution Integral 63
Convolution Theorems 65
2.5 Impulses and Transforms
in the Limit (2.4) 68
Properties of the Unit Impulse 68
Impulses in Frequency 71
Step and Signum Functions 74
Impulses in Time 76
2.6 Discrete Time Signals and the Discrete
Fourier Transform 80
Convolution Using the DFT (2.4) 83
Chapter 3
Signal Transmission and Filtering 91
3.1 Response of LTI Systems (2.4) 92
Impulse Response and the Superposition
Integral 93
Transfer Functions and Frequency
Response 96
Block-Diagram Analysis 102
3.2 Signal Distortion in Transmission
(3.1) 105
Distortionless Transmission 105
Linear Distortion 107
Equalization 110
Nonlinear Distortion and Companding 113
3.3 Transmission Loss and Decibels (3.2) 116
Power Gain 116
Transmission Loss and Repeaters 118
Fiber Optics 119
Radio Transmission 122
3.4 Filters and Filtering (3.3) 126
Ideal Filters 126
Bandlimiting and Timelimiting 128
Real Filters 129
Pulse Response and Risetime 134
3.5 Quadrature Filters and Hilbert
Transforms (3.4) 138
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收藏 7.6MB PDF 举报 
wenhaoyx2019-11-15看错了，以为是西蒙的，打开还页面错误。
