• DocumentCode
    3276221
  • Title

    Adaptive Antenna Scaling for Multi-User MIMO Downlink Zero-Forcing Transmissions with Finite Rate Feedback

  • Author

    Park, Ki-Hong ; Ko, Young-Chai ; Yang, Hong-Chuan ; Kim, James S.

  • Author_Institution
    Korea Univ., Seoul
  • fYear
    2008
  • fDate
    March 31 2008-April 3 2008
  • Firstpage
    661
  • Lastpage
    665
  • Abstract
    In this paper, we introduce a new zero-forcing beamforming (ZFBF) transmission scheme for multi-user MIMO Gaussian channel with finite rate feedback. With this transmission scheme, the base station adaptively utilizes transmit antennas according to the channel status and the number of active users to control the multiuser interference. We show through selected numerical results that our proposed scheme can achieve remarkable sum-rate improvement compared to other schemes with fixed transmit antennas.
  • Keywords
    MIMO communication; adaptive antenna arrays; adaptive antenna scaling; channel status; finite rate feedback; multiple input multiple output; multiuser MIMO Gaussian channel; multiuser MIMO downlink; multiuser interference; zero-forcing beamforming transmission; Adaptive arrays; Antenna feeds; Array signal processing; Base stations; Downlink; Feedback; Gaussian channels; Interference; MIMO; Transmitting antennas;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
  • Conference_Location
    Las Vegas, NV
  • ISSN
    1525-3511
  • Print_ISBN
    978-1-4244-1997-5
  • Type

    conf

  • DOI
    10.1109/WCNC.2008.122
  • Filename
    4489153