We consider a reconfigurable intelligent surface (RIS)-aided massive multi-user multiple-input multiple-output (MIMO) communication system with transceiver hardware impairments (HWIs) and RIS phase noise. Different from the existing contributions, the phase shifts of the RIS are designed based on the long-term angle informations. Firstly, an approximate analytical expression of the uplink achievable rate is derived. Then, we use genetic algorithm (GA) to maximize the sum rate and the minimum date rate. Finally, we show that it is crucial to take HWIs into account when designing the phase shift of RIS.
翻译:我们考虑的是可重新配置的智能表面(RIS)辅助的大型多用户多投入多产出(MIMO)通信系统,有收发机硬件缺陷(HWIS)和RIS阶段噪音(RIS阶段),不同于现有的贡献,RIS的阶段转移是根据长期角度信息设计的。首先,对可实现的链路速率进行大致的分析表达。然后,我们使用遗传算法(GA)来尽量扩大总和率和最低日期率。最后,我们表明,在设计RIS阶段转移时必须考虑到HWIS。