ISBN:
9781468415261
Language:
English
Pages:
Online-Ressource
,
online resource
Edition:
Springer eBook Collection. Humanities, Social Sciences and Law
Parallel Title:
Erscheint auch als
Parallel Title:
Erscheint auch als
Keywords:
Science (General)
;
Social sciences.
;
Humanities.
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.
Abstract:
During the past decade there has been a dramatic change in the nature of mobile communications technology and its impact on the general communic ations environment. In the 1970s, mobile radio was a minority activity in communications, based on relatively unsophisticated technology. The 1980s, however, have seen the emergence of analogue cellular systems and the definition of future digital systems, and the predicted demand for these services is such that investigations into the use of higher frequency bands have already begun. It is predicted that, by the late 1990s, the 'personal communications' world will have resulted in the majority of adults in Europe and North America being dependent on radio-connected terminals of various kinds for more than 50% of their total telecommunications needs. The technology which will form the basis of this revolution has now been defined, at least in outline, and the fixed and mobile equipment that will be used in systems of the future will bear little resemblance to that available even ten years ago. It is impossible within the confines of a single, relatively short book to cover all the subject areas needed for a study of this exciting and expanding field of technology. We have, perforce, been selective and have chosen those topics which we believe to be of primary importance at the present time.
Description / Table of Contents:
1 Introduction to mobile communications1.1 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.
DOI:
10.1007/978-1-4684-1526-1
URL:
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