Transmission mode selection algorithms for spatially correlated mimo interference channels

Jin Sung Kim, Kyoung Jae Lee, Haewook Park, Inkyu Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper, we study $K$ -user multiple-input multiple-output (MIMO) interference channels (IC) in the presence of antenna correlations. Although interference alignment (IA) achieves the maximum multiplexing gain, i.e., degrees of freedom (DOF), the actual performance is degraded due to ill-conditioned channels caused by the antenna correlations. To enhance the overall system performance, we thus consider a transmission mode selection scheme which adaptively determines the number of data streams at each transmitter-receiver pair in a distributed fashion using local channel state information (CSI). A filter update process is exploited in order to estimate the performance regarding each transmission mode successively by considering the actual channel conditions as well as signal-to-noise ratio (SNR). Simulation results show that our mode selection scheme enhances the sum rate performance compared to the conventional full data stream transmissions in spatially correlated MIMO IC.

Original languageEnglish
Article number6200883
Pages (from-to)4475-4479
Number of pages5
JournalIEEE Transactions on Signal Processing
Volume60
Issue number8
DOIs
Publication statusPublished - 2012

Keywords

  • Interference channels
  • mode selection
  • multiple-input multiple-output (MIMO)

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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