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Distributed energy efficiency beamforming design in multiple-input-single-output interference channels

Distributed energy efficiency beamforming design in multiple-input-single-output interference channels

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Coordinated beamforming designs based on energy efficiency of multiple-user interference channels have attracted much attention. The optimisation problem has a fractional form, and is coupled among users, which makes it difficult to be solved directly. A beamforming design for energy-efficient communication in multiple-input–single-output interference channels is studied, and proposes an efficient distributed approach to solve it. A novel method is developed to transform the optimisation problem into a DC (difference of two convex/concave functions) structure. The transformed optimisation problem is approximated by using a separable structure across the users, and this approximated version is solved iteratively. Numerical results show the effectiveness of the authors’ proposed algorithm.

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