论文标题
完全连接的可重新配置的智能表面辅助速率拆分速率拆分多用户传输的多重访问
Fully Connected Reconfigurable Intelligent Surface Aided Rate-Splitting Multiple Access for Multi-User Multi-Antenna Transmission
论文作者
论文摘要
速率分类多重访问（RSMA）已被认为是一种有前途且强大的多重访问（MA）方案，非正交传输框架和6G的干扰管理策略。受到RSMA在多用户多用户多腹传输中的传统MA方案而获得的吸引力的光谱效率增益的启发，在本文中，我们引入了RSMA来重新配置可提供的智能表面（RIS）辅助的多输入单输出（MISO）广播通道（BC）。为了进一步提高光谱效率，考虑了更广泛的RIS架构，称为完全连接的RIS。通过共同优化完全连接的RIS和发射光束器的散射矩阵以最大化总和率，我们表明，与常规的单个连接的RIS RIS方案和无RIS方案相比，提出的完全连接的RIS RIS辅助RISed RSMA传输方案可显着提高频谱效率。它是线性预编码多用户多用户网络的新基准。
Rate-splitting multiple access (RSMA) has been recognized as a promising and powerful multiple access (MA) scheme, non-orthogonal transmission framework and interference management strategy for 6G. Inspired by the appealing spectral efficiency gain achieved by RSMA over conventional MA schemes in multi-user multi-antenna transmission, in this paper we introduce RSMA to reconfigurable intelligent surface (RIS)-aided multiple-input single-out (MISO) broadcast channel (BC). To further enhance the spectral efficiency, a more generalized RIS architecture called fully connected RIS is considered. By jointly optimizing the scattering matrix of the fully connected RIS and the transmit beamformers to maximize the sum-rate, we show that the proposed fully connected RIS aided RSMA transmission scheme significantly improves the spectral efficiency compared with the conventional single connected RIS schemes and the schemes without RIS. It acts as a new benchmark for linearly precoded multi-user multi-antenna networks.
