On the basis of introducing the principles of analog communication，the book is focused on the principles of digital communication，and describes the communication system constitute，the specifications，the operation principles，the performance analysis，and the design methods. New communication systems and technologies developed recently are emphasized.
關於作者：
樊昌信，西安电子科技大学教授、博士生导师、中国通信学会咨询委员会委员。先后被评选为中国通信学会会士、中国电子学会会士、（美国）电气电子工程师学会终身会士IEEE Life Fellow。发表过通信工程领域学术论文100余篇、著译10余本，其中《通信原理》（1980年）一书曾获电子工业部优秀教材特等奖、国家教委优秀教材奖。
目錄：
PARTⅠ
Chapter 1Introduction
11Historical Review of Communication
12Message,Information,and Signal
13Digital Communication
131Basic Concept
132Advantages of Digital Communication
133Digital Communication System Model
134Specifications of Digital Communication System
14Channel
141Wireless Channel
142Wired Channel
143Channel Models
144Influence of Channel Characteristics on Signal Transmission
15Noise in Channel
16Brief Summary
Questions
Exercises
Chapter 2Signals
21Classification of Signals
22Characteristics of Deterministic Signals
221Characteristics in Frequency Domain
222Characteristis in Time Domain
23Characteristics of Random Signals
231Probability Distribution of Random Variable
232Probability Density of Random Variable
24Examples of Frequently Used Random Variables
25Numerical Characteristics of Random Variable
251Mathematical Expectation
252Variance
253Moment
26Random Process
261Basic Concept of Random Process
262Stationary Random Process
263Ergodicity
264Autocorrelation Function and Power Spectral Density of Stationary Random Process
27Gaussian Process
28Narrow Band Random Process
281Basic Concept of Narrow Band Random Process
282Characteristics of Narrow Band Random Process
29Sinusoidal Wave plus Narrow Band Gaussian Process
210Signal Transfer through Linear Systems
2101Basic Concept of Linear Systems
2102Deterministic Signal Transfer through Linear Systems
2103Random Signal Transfer through Linear Systems
211Brief Summary
Questions
Exercises
Chapter 3Analog Modulation System
31Introduction
32Linear Modulation
321Amplitude Modulation （AM）
322Doublesideband Modulation （DSB）
323SingleSideband Modulation （SSB）
324Vestigial Sideband Modulation （VSB）
33Nonlinear Modulation
331Basic Principles
332Frequency Spectrum and Bandwidth of Modulated Signal
333Reception of Angular Modulated Signal
34Brief Summary
Questions
Exercises
Chapter 4Digitization of Analog Signal
41Introduction
42Sampling of Analog Signal
421Sampling of LowPass Analog Signal
422Sampling of BandPass Analog Signal
423Analog Pulse Modulation
43Quantization of Sampled Signal
431Principles of Quantization
432Uniform Quantization
433Nonuniform Quantization
44Pulse Code Modulation
441Basic Principles of Pulse Code Modulation
442Natural Binary Code and Fold Binary Code
443Quantization Noise in PCM System
45Differential Pulse Code Modulation
451Principles of Differential Pulse Code Modulation
452Quantization Noise and Signal to Quantization Noise Ratio in DPCM System
46Delta Modulation
461Principles of Delta Modulation
462Quantization Noise in Delta Modulation System
47Brief Summary
Questions
Exercises
Chapter 5Representation and Transmission of Baseband Digital Signal
51Introduction
52Coding Method of Character
53Waveform of Baseband Digital Signal
54Symbol Code Types of Baseband Digital Signals for Transmission
55Frequency Characteristic of Baseband Digital Signal
551Calculation of Power Spectral Density of vct
552Calculation of Power Spectral Density of uct
553Calculation of Power Spectral Density of st
554Examples of Power Spectral Density Calculation
56Transmission and Intersymbol Interference of Baseband Digital Signal
561Model of Baseband Digital Signal Transmission System
562Intersymbol Interference and Nyquist Criterion
563Partial Response System
57Eye Pattern
58Timedomain Equalizer
581Introduction
582Fundamental Principle of Transversal Filter
583Realization of Transversal Filter
59Brief Summary
Questions
Exercises
Chapter 6Elementary Digital Modulation System
61Introduction
62Binary Amplitude Shift Keying 2ASK
621Basic Principle
622Power Spectral Density
623Symbol Error Probability
63Binary Frequency Shift Keying 2FSK
631Basic Principle
632Power Spectral Density
633Minimum Frequency Space
634Symbol Error Probability
64Binary Phase Shift Keying 2PSK
641Basic Principle
642Power Spectral Density
643Symbol Error Probability
65Binary Differential Phase Shift Keying 2
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