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arXiv · 2404.09734

Weighted Sum-Rate Maximization for Movable Antenna-Enhanced Wireless Networks

Biqian Feng·Yongpeng Wu·Xiang-Gen Xia·Chengshan Xiao
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Abstract

This letter investigates the weighted sum rate maximization problem in movable antenna (MA)-enhanced systems. To reduce the computational complexity, we transform it into a more tractable weighted minimum mean square error (WMMSE) problem well-suited for MA. We then adopt the WMMSE algorithm and majorization-minimization algorithm to optimize the beamforming and antenna positions, respectively. Moreover, we propose a planar movement mode, which constrains each MA to a specified area, we obtain a low-complexity closed-form solution. Numerical results demonstrate that the MA-enhanced system outperforms the conventional system. Besides, the computation time for the planar movement mode is reduced by approximately 30\% at a little performance expense.

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Biqian Feng, Yongpeng Wu, Xiang-Gen Xia, Chengshan Xiao. 2024-04-15. Weighted Sum-Rate Maximization for Movable Antenna-Enhanced Wireless Networks. https://arxiv.org/abs/2404.09734

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