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arXiv · 1811.10133

Optimal Hybrid Beamforming for Multiuser Massive MIMO Systems With Individual SINR Constraints

Guangda Zang·Ying Cui·Hei Victor Cheng·Feng Yang·Lianghui Ding·Hui Liu
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Abstract

In this letter, we consider optimal hybrid beamforming design to minimize the transmission power under individual signal-to-interference-plus-noise ratio (SINR) constraints in a multiuser massive multiple-input-multiple-output (MIMO) system. This results in a challenging non-convex optimization problem. We consider two cases. In the case where the number of users is smaller than or equal to that of radio frequency (RF) chains, we propose a low-complexity method to obtain a globally optimal solution and show that it achieves the same transmission power as an optimal fully-digital beamformer. In the case where the number of users is larger than that of RF chains, we propose a low-complexity globally convergent alternating algorithm to obtain a stationary point.

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Guangda Zang, Ying Cui, Hei Victor Cheng, Feng Yang, Lianghui Ding, Hui Liu. 2018-11-22. Optimal Hybrid Beamforming for Multiuser Massive MIMO Systems With Individual SINR Constraints. https://arxiv.org/abs/1811.10133

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