Enhanced Multiplexing Gain Using Interference Alignment Cancellation in Multi-Cell MIMO Networks

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23 Citations (Scopus)

Abstract

Interference alignment is an effective technique for reducing interference in wireless networks. This paper proposes a generalized interference alignment and cancellation scheme for a cellular network with multiple-input multiple-output users under a Gaussian interfering broadcast channel scenario. We first focus on a three-cell network scenario to demonstrate the basic principle of how to design the transmit beamforming matrix using a non-iterative closed-form approach. We further analytically define the degree of freedom region and numerically confirm the validity of the proposed scheme. Finally, we generalize the proposed method to the L -cell case and consider the impact of different antenna configurations to maintain the proposed scheme.
Original languageEnglish
Pages (from-to)357 - 369
Number of pages13
JournalIEEE Transactions on Information Theory
Volume62
Issue number1
DOIs
Publication statusPublished - Jan 1 2016

Keywords

  • Beamforming
  • cellular network
  • interference cancellation
  • MIMO
  • Wireless networks

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