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· 분류 : 외국도서 > 기술공학 > 기술공학 > 자동차
· ISBN : 9783642641015
· 쪽수 : 433쪽
· 출판일 : 2012-01-28
목차
I. Basics.- 1. Introduction.- 1.1 Mobile and Personal Satellite Communications.- 1.1.1 Applications of Mobile Satellite Communications.- 1.1.2 Personal Satellite Communications.- 1.1.3 UMTS, IMT-2000.- 1.2 Broadband Multimedia Satellite Communications.- 1.3 Frequency Bands.- 1.4 Key Aspects of Satellite Communication Systems.- 2. Satellite Orbits, Constellations, and System Concepts.- 2.1 Satellite Orbits.- 2.1.1 Elliptical and Circular Orbits.- 2.1.2 Satellite Velocity and Orbit Period.- 2.1.3 Orientation of the Orbit Plane.- 2.1.4 Typical Circular Orbits.- 2.1.5 Orbit Perturbations.- 2.1.6 Ground Tracks.- 2.2 Satellite - Earth Geometry.- 2.2.1 Geometric Relations between Satellite and Earth Terminal.- 2.2.2 Coverage Area.- 2.3 Satellite Constellations.- 2.3.1 Inclined Walker Constellations.- 2.3.2 Polar Constellations.- 2.3.3 Asynchronous Polar Constellations.- 2.4 GEO System Concept.- 2.4.1 Inmarsat-3.- 2.4.2 EAST (Euro African Satellite Telecommunications).- 2.5 LEO System Concept.- 2.5.1 Globalstar.- 2.5.2 Intersatellite Links and On-Board Processing.- 2.5.3 Iridium.- 2.6 MEO System Concept.- 2.6.1 ICO.- 2.7 Satellite Launches.- 3. Signal Propagation and Link Budget.- 3.1 Satellite Link Budget.- 3.1.1 Antenna Characteristics.- 3.1.2 Free Space Loss and Received Power.- 3.1.3 Link Budget.- 3.1.4 Spot Beam Concept.- 3.2 Peculiarities of Satellite Links.- 3.2.1 Dependence on Elevation.- 3.2.2 Time Dependence of Satellite Links.- 3.2.3 Faraday Rotation.- 3.3 Signal Shadowing and Multipath Fading.- 3.3.1 Narrowband Model for the Land Mobile Satellite Channel.- 3.3.2 Satellite Channels at Higher Frequencies.- 3.3.3 Wideband Model for the Land Mobile Satellite Channel.- 3.4 Link Availability and Satellite Diversity.- 3.4.1 Concept of Satellite Diversity.- 3.4.2 Correlation of Channels.- 3.4.3 Link Availability and Satellite Diversity Service Area.- 3.5 System Implications.- 4. Signal Transmission.- 4.1 Speech Coding.- 4.1.1 Quality of Coded Speech.- 4.1.2 Overview of Speech Coding Schemes.- 4.2 Modulation.- 4.2.1 Modulation Schemes for Mobile Satellite Communications.- 4.2.2 Bandwidth Requirement of Modulated Signals.- 4.2.3 Bit Error Rate in the Gaussian Channel.- 4.2.4 Bit Error Rate in the Ricean and Rayleigh Fading Channel.- 4.3 Channel Coding (Forward Error Correction, FEC).- 4.3.1 Convolutional Coding.- 4.3.2 Block Coding.- 4.3.3 Error Protection with Cyclic Redundancy Check (CRC).- 4.3.4 RS Codes.- 4.3.5 Performance of Block Codes.- 4.3.6 Performance of Block Codes in Fading Channels.- 4.4 Automatic Repeat Request (ARQ).- 4.4.1 Stop-and-Wait ARQ.- 4.4.2 Go-Back-N ARQ.- 4.4.3 Selective-Repeat ARQ.- 4.5 Typical Error Control Schemes in Mobile Satellite Communications.- II. Satellite Systems for Mobile/Personal Communications.- 5. Multiple Access.- 5.1 Duplexing.- 5.1.1 Frequency-Division Duplexing (FDD).- 5.1.2 Time-Division Duplexing (TDD).- 5.2 Multiplexing.- 5.3 Multiple Access.- 5.4 Slotted Aloha Multiple Access.- 5.4.1 The Principle of Slotted Aloha.- 5.4.2 Throughput of Slotted Aloha.- 5.4.3 Mean Transmission Delay for Slotted Aloha.- 5.4.4 Pure Aloha Multiple Access.- 5.5 Frequency-Division Multiple Access, FDMA.- 5.5.1 Adjacent Channel Interference.- 5.5.2 Required Bandwidth for FDMA.- 5.5.3 Intermodulation.- 5.5.4 Pros and Cons of FDMA.- 5.6 Time-Division Multiple Access, TDMA.- 5.6.1 Bandwidth Demand and Efficiency of TDMA.- 5.6.2 Burst Synchronization in the Receiving Satellite.- 5.6.3 Slot Synchronization in the Transmitting TDMA Terminals.- 5.6.4 Pros and Cons of TDMA.- 5.7 Code-Division Multiple Access, CDMA.- 5.8 Direct-Sequence CDMA (DS-CDMA).- 5.8.1 Generation and Characteristics of Signature Sequences.- 5.8.2 Investigation of Asynchronous DS-CDMA in the Time Domain.- 5.8.3 Investigation of Asynchronous DS-CDMA in the Frequency Domain.- 5.8.4 Multi-Frequency CDMA, MF-CDMA.- 5.8.5 Qualcomm Return Link CDMA (Globalstar).- 5.8.6 Synchronous Orthogonal DS-CDMA with Coherent Detection.- 5.9 CDMA Receivers.-