A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided near-field multiple-input multiple-output (MIMO) communication framework is proposed. A weighted sum rate maximization problem for the joint optimization of the active beamforming at the base station (BS) and the transmission/reflection-coefficients (TRCs) at the STAR-RIS is formulated. The resulting non-convex problem is solved by the developed block coordinate descent (BCD)-based algorithm. Numerical results illustrate that the near-field beamforming for the STAR-RIS aided MIMO communications significantly improve the achieved weighted sum rate.
@article{arxiv.2412.06817,
title = {Joint Beamforming for STAR-RIS in Near-Field Communications},
author = {Li Haochen and Yuanwei Liu and Xidong Mu and Yue Chen and Pan Zhiwen},
journal= {arXiv preprint arXiv:2412.06817},
year = {2024}
}
Comments
arXiv admin note: substantial text overlap with arXiv:2306.14587