In this paper, we propose a rate-splitting multiple access (RSMA) scheme for uplink wireless communication systems with intelligent reflecting surface (IRS) aided. In the considered model, IRS is adopted to overcome power attenuation caused by path loss. We construct a max-min fairness optimization problem to obtain the resource allocation, including the receive beamforming at the base station (BS) and phase-shift beamforming at IRS. We also introduce a successive group decoding (SGD) algorithm at the receiver, which trades off the fairness and complexity of decoding. In the simulation, the results show that the proposed scheme has superiority in improving the fairness of uplink communication.

翻译：本文提出了一种适用于智能反射面（IRS）辅助上行无线通信系统的速率分割多址接入（RSMA）方案。在所考虑的模型中，采用IRS克服路径损耗引起的功率衰减。我们构建了一个最大最小公平性优化问题，以获取资源分配方案，包括基站（BS）的接收波束赋形和IRS的相移波束赋形。同时，我们在接收端引入了一种逐次组译码（SGD）算法，该算法在公平性与译码复杂度之间进行权衡。仿真结果表明，所提方案在提升上行通信公平性方面具有优越性。