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Microwave line of sight link engineering /
"This practical book provides design and implementation guidelines for LOS (Line of Sight) Microwave Radio Links, which are a technological necessity in the telecommunications industry, offering readers ample case studies and ways to apply and adhere to industry standards. The coverage describe...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Hoboken, N.J. :
Wiley,
©2012.
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| Colección: | Engineering professional collection
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- MICROWAVE LINE OF SIGHT LINK ENGINEERING; CONTENTS; PREFACE; ACRONYMS; 1 INTRODUCTION TO MICROWAVE LOS LINK SYSTEMS; 1.1 Introduction; 1.2 Historic Evolution of Radio Links; 1.3 Point-to-Point Fixed Communication Technologies; 1.3.1 Cabled Transport Systems; 1.3.1.1 xDSL Technologies; 1.3.1.2 Fiber-Optic Links; 1.3.2 Satellite Communication Links; 1.3.3 Other Fixed Wireless Systems; 1.3.3.1 Free Space Optic Links; 1.3.3.2 Wireless Point-to-Multipoint Systems; 1.3.3.3 High-Frequency Links; 1.3.3.4 High-Altitude Platform Stations (HAPS); 1.4 Field of Application and Use Cases.
- 1.4.1 Backhaul Networks1.4.2 Backhaul in Mobile Networks; 1.4.3 Metro and Edge Networks; 1.4.4 Fixed Access Networks; 1.4.5 Additional Use Cases; 1.5 Basic Structure of a Fixed Service Microwave Link; 1.6 Spectrum Management Aspects; 1.6.1 ITU-R Radio Regulations: Spectrum Parameters and Definitions; 1.6.2 Frequency Allocations; 1.7 First Approach to the Design of a Microwave LOS Link; 1.8 Link Budget Basics; 1.8.1 Link Budget; 1.8.1.1 Power Levels; 1.8.1.2 Gain and Losses; 1.8.1.3 Link Budget Expression; 1.8.2 Propagation Losses; 1.8.3 Threshold Values and Gross Fade Margin; 1.9 Noise.
- 1.10 InterferencesBibliography; 2 LOSS AND FADING ASSOCIATED WITH TROPOSPHERE PROPAGATION PHENOMENA; 2.1 Introduction; 2.2 Influence of Refraction on Propagation in the Troposphere; 2.2.1 Refractive Index and Radio Refractivity N; 2.2.2 Radio Refractivity Gradient; 2.2.2.1 Variation with Height; 2.2.3 Subrefraction Conditions; 2.2.4 Super-Refraction Conditions; 2.2.5 Ray Bending: Effective Earth Radius; 2.2.6 Ducts; 2.2.7 Beam Spreading; 2.2.8 Variation in the Angles of Launch and Arrival; 2.2.9 Troposphere Multipath Propagation; 2.2.10 Scintillation.
- 2.3 Terrain Diffraction Losses: Fresnel Zones2.4 Vegetation Attenuation; 2.5 Atmospheric Gas and Vapor Absorption; 2.6 Hydrometeors; 2.6.1 Absorption Due to Hydrometeors; 2.6.2 Cross-Polarization: Coupling Losses; 2.7 Reflection; 2.8 Distortion due to Propagation Effects; 2.8.1 Channel Impulse Response; 2.8.2 Two-Ray Model: Frequency Response; Bibliography; 3 FREQUENCY PLAN FOR A FIXED SERVICE MICROWAVE LINK; 3.1 Frequency Planning Overview; 3.2 Bandwidth and Capacity of a Microwave LOS Link; 3.2.1 Gross and Net Bit Rate; 3.2.2 Spectrum Efficiency; 3.2.3 Spectrum Resources.
- 3.3 ITU-R Frequency Plans3.3.1 General Description of a Radio-Frequency Channel Arrangement Plan; 3.3.2 Radio Channel Arrangement Options; 3.3.2.1 Alternated Radio Channel Arrangements; 3.3.2.2 Radio Channel Arrangements for Co-Channel Band Reuse; 3.3.2.3 Radio Channel Arrangements for Interleaved Band Reuse; 3.3.3 Radio-Frequency Channel Arrangement Plan: A Detailed Example; 3.3.3.1 40 MHz Alternated Radio Channel Arrangement; 3.3.3.2 20 MHz Alternated Radio Channel Arrangement; 3.3.3.3 30 MHz Radio Channel Arrangement; 3.3.3.4 10 MHz Radio Channel Arrangement.