• DocumentCode
    1671744
  • Title

    Quasi-Orthogonal Multi-Carrier CDMA

  • Author

    Jitsumatsu, Yutaka ; Kohda, Tohru

  • Author_Institution
    Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka
  • fYear
    2008
  • Firstpage
    1
  • Lastpage
    5
  • Abstract
    It is believed that the dimension of the signal space with interval T and bandwidth W is 2WT, while we cannot make the out-of-band and out-of-time energies of any waveform zero. We propose a Gaussian pulse shaping for multi-carrier CDMA systems to utilize the time and frequency resources effectively. Gaussian pulses have ICI and ISI; they are not orthogonal. Markovity of spreading codes save the drawback of ICI and ISI. Overlapped Gaussian pulses increase the spectral efficiency.
  • Keywords
    Gaussian channels; code division multiple access; pulse shaping; Gaussian pulse shaping; multi carrier CDMA; out-of-band energies; out-of-time energies; quasi orthogonal; spectral efficiency; Bandwidth; Computer science; Filters; Frequency; Intersymbol interference; Multiaccess communication; OFDM; Pulse modulation; Pulse shaping methods; Shape;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
  • Conference_Location
    New Orleans, LO
  • ISSN
    1930-529X
  • Print_ISBN
    978-1-4244-2324-8
  • Type

    conf

  • DOI
    10.1109/GLOCOM.2008.ECP.229
  • Filename
    4698004
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1671744