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IEEE Transactions on Vehicular Technology

Issue 2 • May 1985

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Displaying Results 1 - 11 of 11
  • [Front cover and table of contents]

    Publication Year: 1985, Page(s): c1
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    Freely Available from IEEE
  • Transient responses of combined regenerative and rheostatic braking for DC chopper-fed motors

    Publication Year: 1985, Page(s):45 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (730 KB)

    The possible modes of operation are explained and the dynamic equations for the combined regenerative and rheostatic braking of dc chopper controlled series motor are derived. A computer-based piecewise linear technique is used to analyze the transient responses, taking the full account of nonlinearities such as the magnetic saturation and the product of variable terms. The responses in the transi... View full abstract»

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  • Quantification of electromagnetic absorption in humans from body-mounted communication transceivers

    Publication Year: 1985, Page(s):55 - 62
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (513 KB)

    The internal electric (E) field and energy deposition in a full-size adult male mannequin in the immediate vicinity of 1.5 W body-mounted communication transceivers have been measured. Transceivers operating at the four frequencies 50, 150, 450, and 800 MHz, and placed at various locations vis-à-vis the body were used. The mannequin was filled with two-thirds muscle-simulant biological phanto... View full abstract»

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  • Relationships for three-dimensional modeling of co-channel reuse

    Publication Year: 1985, Page(s):63 - 68
    Cited by:  Papers (12)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB)

    Ubiquitous use of low-power hand-held radiotelephone units will introduce a third dimension into channel assignment architecture. Co-channel reuse rules in two dimensions are reviewed and extended to three dimensions. Rules for generating N (number of channel sets) and D/R (which affects median signal-to-interference ratio) are developed for several three-dimensional geometries. It is shown that i... View full abstract»

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  • Spectrum efficiency of GMSK land mobile radio

    Publication Year: 1985, Page(s):69 - 75
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Gaussian-filtered minimum-shift keying (GMSK) is a constant envelope and narrow-band modulation suitable for power- and band-limited digital radio communication. From the viewpoint of efficient spectrum use by land mobile radio, geographical reuse of cochannels as well as power spectrum compactness are desired. The output power spectrum of GMSK modulation can be made compact, at a sacrifice of co-... View full abstract»

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  • A model for channel sharing in land mobile radio dispatch services

    Publication Year: 1985, Page(s):76 - 85
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (775 KB)

    A modeling approach to the problem of channel sharing in land mobile radio dispatch services, which is based on real life traffic data, is presented. In order to apply the GI/G/1 queueing model, the first step consists in identifying a message arrival process for each user by means of observed available data. It is then shown how to use simple approximation formulas to evaluate the expected waitin... View full abstract»

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  • Propagation loss prediction: A comparative study with application to the mobile radio channel

    Publication Year: 1985, Page(s):86 - 96
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (871 KB)

    A number of statistical models are available in the literature for the prediction and the calculation of transmission loss, but the main differences between them as well as their usefulness in a particular situation is not easy to assess. In this article, the experimental results of Okumura, as seen through the empirical expression derived by Hata, are compared with the models of Egli, Edwards and... View full abstract»

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  • Measured vehicular antenna performance

    Publication Year: 1985, Page(s):97 - 107
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (797 KB)

    Power gain radiation patterns of mobile antennas mounted in six different locations on a test vehicle were measured with and without typical lights and sirens mounted on the roof. The measurements were performed at frequencies representing the frequency bands of 25 to 50, 150 to 174, 400 to 512, and 806 to 866 MHz. In addition, special antennas consisting of three disguised antennas operating at d... View full abstract»

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  • Antenna height dependence of 800 MHz attenuation measured in houses

    Publication Year: 1985, Page(s):108 - 115
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB)

    Signal levels around and within four suburban houses were measured at 800 MHz. The measurements were made from an instrumentation van having erectable 27-ft and 12.5-ft-high antennas. The dependence of attenuation on the height of antennas is needed in designing portable radio communication systems that can accommodate low-power radio communication sets. The height dependence of the trends in the ... View full abstract»

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  • Letter to the editor

    Publication Year: 1985, Page(s): 116
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1985, 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.

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Meet Our Editors

Editor-in-Chief
Yuguang Michael Fang
University of Florida