Mobile Communication Systems

In: Springer eBook Collection

Abstract

1 Introduction to mobile communications -- 1.1 Background -- 1.2 Mobile radio system fundamentals -- 1.3 A simple mobile radio system -- 1.4 Practical communication systems -- 1.5 Paging -- 1.6 Portables -- 1.7 Dialling systems -- 1.8 Radiophone services -- 1.9 Channel sharing -- 1.10 Area coverage techniques -- 1.11 Present and future use of mobile radio -- References -- 2 Multipath characteristics in urban areas -- 2.1 Introduction -- 2.2 The nature of multipath propagation -- 2.3 Short-term fading -- 2.4 Frequency-selective fading -- 2.5 Channel characterization -- 2.6 Channel sounding techniques -- 2.7 Practical channel sounders -- 2.8 Small-area characterization -- 2.9 Large-area characterization -- 2.10 Conclusions -- References -- 3 Propagation and signal strength prediction -- 3.1 Introduction -- 3.2 Fundamentals of VHF and UHF propagation -- 3.3 Propagation over terrain obstacles -- 3.4 Multiple knife-edge diffraction -- 3.5 Propagation prediction models -- 3.6 Signal strength prediction in urban areas -- 3.7 Discussion -- 3.8 Signal variability -- 3.9 Large area statistics -- 3.10 Building penetration losses -- References -- 4 Modulation techniques -- 4.1 Introduction -- 4.2 Amplitude modulation -- 4.3 Angle modulation -- 4.4 Implementation of AM systems -- 4.5 Single-sideband implementation -- 4.6 Demodulation -- 4.7 Generation of FM signals -- 4.8 FM demodulators -- 4.9 The effect of noise on AM systems -- 4.10 The effect of noise on FM systems -- 4.11 The effects of multipath propagation -- 4.12 Demodulation of data signals -- 4.13 Differentially encoded PSK (DPSK) -- 4.14 The effect of noise in data communication systems -- 4.15 Carrier transmissions -- 4.16 The influence of multipath fading on data transmissions -- 4.17 System performance -- 4.18 The fully digital approach -- References -- 5 Man-made noise -- 5.1 Introduction -- 5.2 Characterization of pulses -- 5.3 Characterization of impulsive noise -- 5.4 Measuring equipment -- 5.5 Practical measuring systems -- 5.6 Measurement of noise amplitude distribution -- 5.7 Statistical characterization of noise -- 5.8 Impulsive noise measurements -- 5.9 Summary -- 5.10 Performance prediction techniques -- References -- 6 Diversity reception -- 6.1 Introduction -- 6.2 Basic diversity methods -- 6.3 Improvements obtainable from diversity -- 6.4 Switched diversity -- 6.5 The effect of diversity on data systems -- 6.6 Practical diversity systems -- 6.7 Predetection diversity -- 6.8 Diversity systems using special receivers -- 6.9 Switched diversity -- 6.10 Comparison -- 6.11 Postdetection diversity -- 6.12 Time diversity -- 6.13 Discussion and conclusions -- References -- 7 Using the radio channel in cellular radio networkgs -- 7.1 The radio channel as a system component -- 7.2 Wideband versus narrowband -- 7.3 Cellular radio fundamentals -- 8 Analogue cellular radio systems -- 8.1 Channel structures -- 8.2 Specifications for the radio equipment -- 8.3 Network control activity -- 8.4 System operation -- 8.5 Some system comparisons -- 9 Digital cellular radio systems -- 9.1 Digital versus analogue for second-generation cellular systems -- 9.2 Choice of basic system architecture -- 9.3 Essential techniques for digital implementation -- 9.4 Example systems -- 9.5 Postscript.