Chapter 1 Introduction
1.1 Basic concepts and models of communication system
1.1.1 Communication system model
1.1.2 Analog communication model
1.1.3 Digital communication model
1.2 The classification of communication systems
1.2.1 Modulation mode
1.2.2 Division of frequency band
1.3 Information and its measurement
1.4 The main performance index of communication systems
Summary and discussion
Homework
Vocabulary
Chapter 2 Random processes
2.1 Basic concepts of random processes （definition of random processes
2.1.1 Definition
2.1.2 Numerical characteristics of a random process
2.2 Stationary random process
2.2.1 Definition
2.2.2 Ergodicity
2.2.3 Autocorrelation function of stationary random processes
2.2.4 Power spectral density
2.3 Gaussian process
2.4 Transmission of a random process through a linear time-invariant （LT） filter
2.5 Narrowband random process
2.6 Sine wave plus narrowband Gaussian noise
2.7 Gaussian white noise and band pass white noise
Summary and discussion
Homework
Vocabulary
Chapter 3 Channel
3.1 The classification of channels
3.1.1 Wireless channels
3.1.2 Wire channel
3.2 Channel models
3.2.1 Modulation channel model （训制解调模型）
3.2.2 Coling channel model（编码信道模型）
3.3 Influence of the channel characteristics on transmission （for modulation model）
3.3.1 Influence of constant parameter channel on signal transmission
3.3.2 Influence of random parameter channel of signal transmission
3.4 Channel capacity （continuous channel）
Summary and discussion
Homework
Vocabulary and terminologies
Chapter 4 Continuous-wave modulation （analog modulation system）
4.1 Introduction
4.2 Linear modulation
4.2.1 AM
4.2.2 Double-sideband modulation
4.2.3 Single-sideband modulation
