Adaptive spatial intercell interference cancellation in multicell wireless networks

  • Authors:

  • Jun Zhang;Jeffrey G. Andrews

  • Affiliations:

  • Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong and Department of Electrical and Computer Engineering, The University of T ...;Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX

  • Venue:
  • IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
  • Year:
  • 2010

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Abstract

Downlink spatial intercell interference cancellation (ICIC) is considered for mitigating other-cell interference using multiple transmit antennas. A principle question we explore is whether it is better to do ICIC or simply standard single-cell beamforming. We explore this question analytically and show that beamforming is preferred for all users when the edge SNR (signal-to-noise ratio) is low ( 0 dB), and ICIC is preferred when the edge SNR is high (