Luận Văn 12-Broadband Communications Network

ĐỀ TÀI : 12-Broadband Communications Network


Contents
Preface xi
1 Introduction 1
2 PLC in the Telecommunications Access Area 7
2.1 Access Technologies 7
2.1.1 Importance of the Telecommunications Access Area 7
2.1.2 Building of New Access Networks 8
2.1.3 Usage of the Existing Infrastructure in the Access Area 11
2.2 Powerline Communications Systems 14
2.2.1 Historical Overview 14
2.2.2 Power Supply Networks 14
2.2.3 Standards 15
2.2.4 Narrowband PLC 16
2.2.5 Broadband PLC 19
2.3 PLC Access Networks 19
2.3.1 Structure of PLC Access Networks 19
2.3.2 In-home PLC Networks 21
2.3.3 PLC Network Elements 22
2.3.4 Connection to the Core Network 27
2.3.5 Medium-voltage PLC 31
2.4 Specific PLC Performance Problems 32
2.4.1 Features of PLC Transmission Channel 33
2.4.2 Electromagnetic Compatibility 33
2.4.3 Impact of Disturbances and Data Rate Limitation 34
2.4.4 Realization of Broadband PLC Transmission Systems 36
2.4.5 Performance Improvement by Efficient MAC Layer 36
2.5 Summary 37
3 PLC Network Characteristics 39
3.1 Network Topology 39
3.1.1 Topology of the Low-voltage Supply Networks 39