• DocumentCode
    2695528
  • Title

    Transmitter diversity effect with dispersal oscillators for digital mobile radio

  • Author

    Fujimoto, Atsushi ; Matsuno, Keishi ; Ito, Sadao

  • Author_Institution
    Iwatsu Electr. Co. Ltd., Tokyo, Japan
  • fYear
    1989
  • fDate
    1-3 May 1989
  • Firstpage
    474
  • Abstract
    The dispersed-carrier-wave format is proposed for the execution of simultaneous multistation transmission for mobile communications. Signals are transmitted by modulating the carrier wave, which is frequency-modulated by sinusoidal waves. The diversity effects of this format were calculated, and the results were confirmed for the case of simultaneous two-station transmission. In cellular zone systems, in the case when the transmission distance of the radio waves is sufficiently large compared with the radius of the zone, there would be areas where several radio zones overlap. Therefore, for the theoretical calculations, the maximum number of simultaneous transmission bases was considered to be up to six stations. Also, numerical calculations of the transmission diversity effects have been made in the case of simultaneous multiple-station transmissions for a base station network with configurations of regular hexagonal meshes
  • Keywords
    cellular radio; digital radio systems; diversity reception; mobile radio systems; carrier wave modulation; cellular zone systems; digital mobile radio; dispersal oscillators; dispersed-carrier-wave format; frequency modulation; regular hexagonal meshes; simultaneous multistation transmission; sinusoidal waves; transmitter diversity effect; two-station transmission; Base stations; Dispersion; Frequency diversity; Indium tin oxide; Interference; Land mobile radio; Oscillators; Phase shifters; RF signals; Radio transmitters;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Vehicular Technology Conference, 1989, IEEE 39th
  • Conference_Location
    San Francisco, CA
  • ISSN
    1090-3038
  • Type

    conf

  • DOI
    10.1109/VETEC.1989.40117
  • Filename
    40117