CONTENT

ContentsChapter 1 - Digital Microwave Communication OverviewTransmission Methods in Current Communications Networks 1-3Definition of Microwave 1-6Concept of Digital Microwave Communication 1-8Biggest Challenge for Digital Microwave Communication 1 -10Microwave Frequency Band Selection and RF Channel Configuration 1-12Digital Microwave Communication Modulation 1-15Microwave Frame Structure 1-17Chapter 2 - Digital Multiplexing: PDH and SDH OverviewEuropean Digital Multiplexer Hierarchy 2-3PDH Multiplexing 2-4SDH Multiplexing 2-8SDH Benefits over PDH 2-13Examples of SDH Microwave 2-15

Chapter 3 - Introduction to Digital Microwave Communication Equipment Microwave Equipment Category 3-3Split-Mount Microwave Equipment 3-6Microwave Antenna 3-9Antenna Adjustment 3-11Split-Mount Microwave Equipment ODU 3-17Split-Mount Microwave Equipment IDU 3-23Chapter 4 - Digital Microwave Networking and Application Common Networking Modes of Digital Microwave 4-3Types of Digital Microwave Stations 4-5Types of Relay Stations 4-7Application of Digital Microwave 4-12Chapter 5 - Microwave Propagation and Anti-fading Technologies Key Parameters in Microwave Propagation 5-3Factor Affecting Electric Wave Propagation Terrain 5-7

Factor Affecting Electric Wave Propagation Atmosphere 5-10

Free Space Transmission Loss 5-13Anti-fading Technologies for Digital Microwave System 5-28Protection Modes of Digital Microwave Equipment 5-45Chapter 6 - Microwave Link Planning and Design Hop Calculations (Design) 6-3Path Profile 6-4Fresnel Zone 6-8Obstacle Loss: Fresnel Zone is not Cleared 6-11Line-Of-Sight Survey 6-15Link Budget 6-22Chapter 7 - Frequency Planning Frequency Planning Overview 7-3Frequency Allocation 7-4Interference 7-5Radio Spectrum 7-6

Receiver Threshold Degradation 7-14

DeterminingMicrowave Channels 7-16Channel Plan 7-19Output Power

7-22Chapter 8 - Designing Microwave Transmission LinksBasis of Designing a Microwave Transmission Line 8-3Requirement on a Microwave Transmission Line 8-4Objective of Designing a Microwave Transmission Line 8-6Transmission Clearance 8-7Meanings of K Value in the Microwave Transmission Planning 8-14Procedure for Designing a Microwave Transmission Line 8-16i