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IEEE Transactions on Vehicular Technology

Issue 4 • Date Nov. 1977

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Displaying Results 1 - 17 of 17
  • [Front cover and table of contents]

    Publication Year: 1977, Page(s): c1
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  • In memoriam [Richard Pitman Gifford]

    Publication Year: 1977, Page(s):293 - 294
    Cited by:  Papers (2)
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    Freely Available from IEEE
  • Radio propagation for vehicular communications

    Publication Year: 1977, Page(s):295 - 308
    Cited by:  Papers (68)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1256 KB)

    Radio propagation is affected by many factors including the frequency, distance, antenna heights, curvature of the earth, atmospheric conditions, and the presence of hills and buildings. The influence of each of these factors at frequencies above about 30 MHz is discussed with most of the quantitative data being presented in the series of nomograms. By means of three or four of these charts an est... View full abstract»

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  • Radio wave loss deviation and shadow loss at 900 MHz

    Publication Year: 1977, Page(s):309 - 313
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (423 KB)

    Radio wave propagation between base and mobile stations is normally described as being Rayleigh distributed due to multipath radio wave combining. When the number of radio wave paths are limited the variation in received signal amplitude frequently follows a more general case given by a Weibull distribution. A significant portion of the Weibull distribution is defined as the transmission loss devi... View full abstract»

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  • Mobile radio propagation in British cities at frequencies in the VHF and UHF bands

    Publication Year: 1977, Page(s):313 - 323
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (874 KB)

    Measurements of the received signal envelope magnitude have been made in three British cities at frequencies of 85.875, 167.2, and 441.025 MHz. In all cases unmodulated carrier waves were radiated from aerials atop tall buildings or prominent terrain features and detected using a vehicle-mounted receiver. These measurements have provided the basis for an analysis of the factors affecting the trans... View full abstract»

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  • Computer prediction of service areas for VHF and UHF land mobile radio services

    Publication Year: 1977, Page(s):323 - 327
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    A computer program written to predict the effective service area of a transmitter in a VHF or UHF mobile radio network is described. The computed results enable field strength contours to be determined, and hence provide more useful information than is possible by reference to standard statistical curves. Present manual methods of calculating the attenuation to be expected over transmission paths ... View full abstract»

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  • 900-MHz mobile radio propagation in the Copenhagen area

    Publication Year: 1977, Page(s):328 - 331
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (643 KB)

    A comparative study of 900-MHz, 450-MHz, and 150-MHz mobile radio propagation characteristics performed in Copenhagen, Denmark is described. The three systems were compared with respect to usable coverage area, flutter characteristics, and transmission quality. A statistical method was used for the determination of the coverage area, the limits of which are defined by the contour line correspondin... View full abstract»

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  • Mobile fading—Rayleigh and lognormal superimposed

    Publication Year: 1977, Page(s):332 - 335
    Cited by:  Papers (145)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    A closed solution is presented showing the composite probability distribution of power levels derived from short term Rayleigh fading with superimposed long term lognormal variations of mean value. An example shows how the results can be applied to the prediction of bit error rates in a mobile radio data transmission channel, and how the error rate will vary with standard deviation of the lognorma... View full abstract»

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  • Mobile radio fading in Scandinavian terrain

    Publication Year: 1977, Page(s):335 - 340
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (763 KB)

    Field strength patterns have been recorded in Sweden (deep woods, hilly terrain), Norway (long narrow valleys), and Denmark (farmland, urban districts). Digital processing of recordings has taken place. Examples of amplitude distributions are presented for various types of terrain. Results show good agreement with the Rayleigh distribution in spite of the great difference in type of terrain. View full abstract»

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  • Multipath delay spread and path loss correlation for 910-MHz urban mobile radio propagation

    Publication Year: 1977, Page(s):340 - 344
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    Performance of some mobile radio systems is limited both by multipath delay spread and average path loss. This paper presents data indicating a low correlation between delay spread and path loss at 910 MHz for 100 small areas within a 2 × 2 ½-km region. Some small areas with low path loss have large delay spread. The region extends from 1.5 to 3.5 km from a base station on a 120-m high b... View full abstract»

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  • Mobile antenna gain in the multipath environment at 900 MHz

    Publication Year: 1977, Page(s):345 - 348
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A program has been completed that investigated the effect of the urban multipath environment on mobile antennas at 900 MHz. The program involved the construction of several mobile antennas, careful measurement of these antennas on an antenna range to determine their characteristics in a controlled environment, and measurement of their characteristics in the multipath environment of cities. Measure... View full abstract»

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  • Antennas for VHF/UHF personal radio: A theoretical and experimental study of characteristics and performance

    Publication Year: 1977, Page(s):349 - 357
    Cited by:  Papers (64)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (770 KB)

    A theoretical analysis of the characteristics of small personal radio antennas for the 68- to 470-MHz frequency range is given. Representing the human body by a simplified lossy dielectric structure, the influence of the body on the performance of the antenna is investigated in detail, and it is shown how antenna impedance, gain, and radiation patterns can be calculated taking the presence of the ... View full abstract»

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  • The attenuation of UHF radio signals by houses

    Publication Year: 1977, Page(s):358 - 362
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (498 KB)

    The results of a measurement program that was conducted to determine the attenuation of UHF radio signals penetrating to the inside of a typical house is presented. This program is part of a study to determine the feasibility of using direct satellite communication to disseminate disaster warning messages. The measurements were made in a manner to determine the building attenuation as a function o... View full abstract»

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  • New radio paging system and its propagation characteristics

    Publication Year: 1977, Page(s):362 - 366
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (277 KB)

    A radio paging system using a 200 band NRZ-digital code for the selective calling signal on new frequency bands is discussed. This system uses the 250-MHz band, and its propagation characteristics in urban areas, necessary for the radio system design, was measured in the Tokyo area. Distance versus median field strength characteristics in this band approximate that of the 150-MHz band. Building lo... View full abstract»

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  • Cordless telephone system and its propagation characteristics

    Publication Year: 1977, Page(s):367 - 371
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (389 KB)

    The cordless telephone system is designed to replace the indoor portion of a subscriber line with a radio so that a telephone set can be carried about freely and used anywhere within a limited service area. Therefore, it can be considered to be a partial realization of a portable telephone system. A description of the cordless telephone system using the 250-MHz and 400-MHz bands, which is schedule... View full abstract»

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  • Leaky coaxial cable characteristics at 900 MHz

    Publication Year: 1977, Page(s):372 - 375
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    Mobile communication through electromagnetically obstructed areas can be established by using wayside leaky coaxial cables. Available experimental data had been limited to 450 MHz. This paper presents the results of a recent experiment of the RADIAX cable at 900 MHz in near-field. These data are used to supplement an earlier RADIAX experiment at frequencies below 450 MHz and to compare with a theo... View full abstract»

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  • [Back cover]

    Publication Year: 1977, 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
Yuguang Michael Fang
University of Florida