IEEE Transactions on Vehicular Technology

Issue 3 • Aug. 1987

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Displaying Results 1 - 9 of 9
  • [Front cover and table of contents]

    Publication Year: 1987, Page(s): c1
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    Freely Available from IEEE
  • Channel occupancy time distribution in a cellular radio system

    Publication Year: 1987, Page(s):89 - 99
    Cited by:  Papers (243)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1043 KB)

    The distribution of the channel occupancy time in a cellular radio system is studied, namely, the distribution of the time spent by customers on one frequency channel within a given cell. Two approaches are used. The first one relies on a computer simulation allowing a general model for mobiles behavior. The second is analytical, and assume a simplified system where mobiles keep constant direction... View full abstract»

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  • Analysis for spectrum efficiency in single cell trunked and cellular mobile radio

    Publication Year: 1987, Page(s):100 - 113
    Cited by:  Papers (37)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1026 KB)

    Spectrum efficiencies for single-cell trunked and cellular mobile radio systems are analyzed, taking into consideration fading circumstances and call blocking probability. Two kinds of transmit power control methods are considered. One retains area mean power at the receiver constant and the other retains local mean power constant. For single-cell trunked systems, it has been shown how spectrum ef... View full abstract»

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  • Measurements and models of a land mobile satellite channel and their applications to MSK signals

    Publication Year: 1987, Page(s):114 - 121
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The fading and shadowing effects observed on land mobile satellite signals are characterized in statistical terms. Models are developed in terms of probability distribution of the signal's envelope and phase as well as its rate of change with time. The multipath fading and shadowing effects modelled are typical of those encountered in a mobile-satellite link in rural and suburban areas. A comparis... View full abstract»

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  • Impact of frequency-selective fading on digital land mobile radio communication at transmission rates of several hundred kbit/s

    Publication Year: 1987, Page(s):122 - 128
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (615 KB)

    Based on measurements reported from New York City and the city of Berne, Switzerland, and its outskirts, computer simulations of the mobile radio channel transfer functions were performed. It is demonstrated that the impulse response may suffer considerably from large variations of the channel characteristics. It is concluded that powerful means of signal processing are necessary to safeguard digi... View full abstract»

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  • UHF bent-slot antenna system for portable equipment—II: Receiving performance in urban areas

    Publication Year: 1987, Page(s):129 - 134
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (637 KB)

    The receiving performance of UHF portable equipment with a bent-slot antenna is studied on the basis of experimental results. The received power increase in the experiment is analyzed by applying the ray and random models to urban area structures. The analysis shows that the bent-slot antenna designed with both vertical and horizontal polarization components has contributed to an increase in recei... View full abstract»

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  • The effects of multipath delay spread on timing recovery

    Publication Year: 1987, Page(s):135 - 140
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (462 KB)

    Equations for the recovered timing for a squaring timing recovery circuit under multipath radio propagation are derived. Both coherent and differential detections are studied. If delay spread is much smaller than the symbol duration, the recovered timing can be approximated by the centroid of the power delay profile, p(t). Two cases of timing loop bandwidth are considered. If the fading frequency ... View full abstract»

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  • Microprocessor-based railway interlocking control with low accident probability

    Publication Year: 1987, Page(s):141 - 147
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    A laboratory model incorporating a microprocessor-based system to control signals and points and to monitor track circuits is described. Approach locking and backlocking controlled through a programmable timer are included. The model consists of a control panel with extrance-exit type control, namely a switch and a pushbutton for each route. Light emitting diodes (LED's) take the place of signal l... View full abstract»

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  • [Back cover]

    Publication Year: 1987, Page(s): c4
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    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Vehicular Technology covers land, airborne, and maritime mobile services, vehicular electrotechnology, equipment, and systems identified with the automotive industry.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Nei Kato, Professor
Graduate School of Information Sciences (GSIS)
Tohoku University
Aramaki-Aoba 6-3-09, Aoba-ku, Sendai, 980-8579, JAPAN
Email: kato@it.is.tohoku.ac.jp