本课程是电子与通信工程领域的专业理论基础课，着眼于提高学生的通信系统理论水平。课程授课内容包括：数字调制信号的特征、信道的模型、数字调制与解调、符号与定时同步、自适应均衡技术、多信道与多载波系统、扩频通信、衰落信道上的数字通信等

Synopsis:The Communication Principle and Systems is the fundamentally theoretical course in the electronic and communication engineering field. This course is aimed at improving the students' theoretical understanding level of communication systems. The main contents include: characteristics of digitally modulated signals, channel models, digital modulation and demodulation, multichannel and multicarrier systems, spread spectrum communication, digital communications through fading multipath channels, etc.Course Contents and Outline:1Introduction 1.1 Elements of a Digital Communication System 1.2 Communication Channels and Their Characteristics 1.3 Mathematical Models for Communication Channels 2 Characterization of Communication Signals and Systems 2.1 Representation of Band-Pass Signals and Systems 2.2 Signal Space Representations 2.3 Representation of Digitally Modulated Signals 2.4 Spectral Characteristics of Digitally Modulated Signals 3 Optimum Receivers for the Additive White Gaussian Noise Channel 3.1 Optimum Receiver for Signals Corrupted by Additive White Gaussian Noise 3.2 Performance of the Optimum Receiver for Memoryless Modulation 3.3 Optimum Receiver for CPM Signals 3.4 Optimum Receiver for Signals with Random Phase in AWGN Channel 4 Channel Capacity and Coding 4.1 Channel Models and Channel Capacity 5 Convolutional Channel Codes 6 Signal Design for Band-Limited Channels 6.1 Characterization of Band-Limited Channels 6.2 Signal Design for Band-Limited Channels 6.3 Probability of Error for Detection of Partial-Response Signals 7 Communication Through Band-Limited Linear Filter Channels 7.1 Optimum Receiver for Channels with ISl and AWGN 7.2 Linear Equalization 7.3 Decision-Feedback Equalization 8 Multichannel and Multicarrier Systems 8.1 Multichannel Digital Communications in AWGN Channels 8.2 Multicarrier Communications 9 Spread Spectrum Signals for Digital Communications 9.1 Model of Spread Spectrum Digital Communication System 9.2 Direct Sequence Spread Spectrum Signals 9.3 Frequency-Hopped Spread Spectrum Signals 10 Digital Communications through Fading Multipath Channels 10.1 Characterization of Fading Multipath Channels 10.2 The Effect of Signal Characteristics on the Choice of a Channel Model 10.3 Frequency-Nonselective, Slowly Fading Channel 10.4 Diversity Techniques for Fading Multipath Channels 10.5 Digital Signaling over a Frequency-Selective, Slowly Fading Channel Assessment:This course is difficult and thus requires the students to spend twice of the class time to learn by themselves after class. Assessment is conducted mainly through final written exams. The project is also assessed as an important reference. Final Exam: 70%Projects and Homework: 30%Textbook and Reference:1. Proakis, Digital Communications (4th edition), McGraw Hill, 2001.