Linear algebraic beamforming design for multiuser MISO interference channels: A reduction in search space dimension

Sang Won Choi, Won Yong Shin, Juyeop Kim

Research output: Contribution to journalArticle

Abstract

Near-optimal transmit beamformers are designed formultiusermultiple-input single-output interference channels with slowly time-varying block fading. The main contribution of this article is to provide a method for deriving closed-form solutions to effective beamforming in both low and high signal-to-noise ratio regimes. The proposed method basically leverages side information obtained from the channel correlation between adjacent coding blocks. More specifically, our methodology is based on a linear algebraic approach, which is more efficient than the optimal scheme based on the Gaussian input in the sense of reducing the average number of search space dimensions for designing the near-optimal transmit beamformers. The proposed method is shown to exhibit near-optimal performance via computer simulations in terms of the average sum-rate.

Original languageEnglish
Article number431
JournalEntropy
Volume20
Issue number6
DOIs
Publication statusPublished - 2018 Jun 1

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beamforming
interference
fading
coding
signal to noise ratios
computerized simulation
methodology
output

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "Near-optimal transmit beamformers are designed formultiusermultiple-input single-output interference channels with slowly time-varying block fading. The main contribution of this article is to provide a method for deriving closed-form solutions to effective beamforming in both low and high signal-to-noise ratio regimes. The proposed method basically leverages side information obtained from the channel correlation between adjacent coding blocks. More specifically, our methodology is based on a linear algebraic approach, which is more efficient than the optimal scheme based on the Gaussian input in the sense of reducing the average number of search space dimensions for designing the near-optimal transmit beamformers. The proposed method is shown to exhibit near-optimal performance via computer simulations in terms of the average sum-rate.",
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Linear algebraic beamforming design for multiuser MISO interference channels : A reduction in search space dimension. / Choi, Sang Won; Shin, Won Yong; Kim, Juyeop.

In: Entropy, Vol. 20, No. 6, 431, 01.06.2018.

Research output: Contribution to journalArticle

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