Reconfigurable intelligent surface (RIS) is known as a promising technology to improve the performance of wireless communication networks, which has been extensively studied. Movable antenna (MA) is a novel technology that fully exploits the antenna position for enhancing the channel capacity. In this paper, we propose a new RIS-aided multiuser communication system with MAs. The sum-rate is maximized by jointly optimizing the beamforming, the reflection coefficient (RC) values of RIS and the positions of MAs. A fractional programming-based iterative algorithm is proposed to solve the formulated non-convex problem, considering three assumptions for the RIS. Numerical results are presented to verify the effectiveness of the proposed algorithm and the superiority of the proposed MA-based system in terms of sum-rate.
@article{arxiv.2311.06501,
title = {Sum-Rate Optimization for RIS-Aided Multiuser Communications with Movable Antenna},
author = {Yunan Sun and Hao Xu and Chongjun Ouyang and Hongwen Yang},
journal= {arXiv preprint arXiv:2311.06501},
year = {2023}
}