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arXiv · 1910.10967

Joint User Selection and Precoding in Multiuser MIMO Systems via Group LASSO

Saba Asaad·Ali Bereyhi·Ralf R. Muller·Rafael F. Schaefer
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Abstract

Joint user selection and precoding in multiuser MIMO settings can be interpreted as group sparse recovery in linear models. In this problem, a signal with group sparsity is to be reconstructed from an underdetermined system of equations. This paper utilizes this equivalent interpretation and develops a computationally tractable algorithm based on the method of group LASSO. Compared to the state of the art, the proposed scheme shows performance enhancements in two different respects: higher achievable sum-rate and lower interference at the non-selected user terminals.

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Saba Asaad, Ali Bereyhi, Ralf R. Muller, Rafael F. Schaefer. 2019-10-24. Joint User Selection and Precoding in Multiuser MIMO Systems via Group LASSO. https://arxiv.org/abs/1910.10967

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