论文标题
6G-第二部分：与集成感应和通信的相互作用的速率分类多重访问
Rate-Splitting Multiple Access for 6G -- Part II: Interplay with Integrated Sensing and Communications
论文作者
论文摘要
这封信是三部分教程的第二部分，重点是降低速率的多访问（RSMA）6G。作为教程的第二部分，这封信介绍了RSMA与集成雷达传感和通信（ISAC）之间的相互作用。特别是，我们介绍了一般的RSMAASSIST iSAC体系结构，ISAC平台具有与下行链路用户同时通信的双重能力，并向移动的目标进行探测检测信号。然后，分别引入了雷达传感和通信的指标，然后是RSMA辅助的ISAC波形设计示例，该示例共同将目标估计的Cramer-Rao结合（CRB）最小化，并最大程度地降低了由Per-Antenna Power约束的最低通信用户（MFR）。通过陆地和卫星场景中的模拟结果，通过模拟结果来验证RSMA辅助ISAC的优势。 RSMA被证明是ISAC的强大多重访问和干扰管理策略，与传统的基准策略相比，提供了更好的沟通感应权衡。因此，RSMA是下一代多元访问（NGMA）和6G及以后的未来网络的有前途的技术。
This letter is the second part of a three-part tutorial focusing on rate-splitting multiple access (RSMA) for 6G. As Part II of the tutorial, this letter addresses the interplay between RSMA and integrated radar sensing and communications (ISAC). In particular, we introduce a general RSMAassisted ISAC architecture, where the ISAC platform has a dual capability to simultaneously communicate with downlink users and probe detection signals to a moving target. Then, the metrics of radar sensing and communications are respectively introduced, followed by a RSMA-assisted ISAC waveform design example which jointly minimizes the Cramer-Rao bound (CRB) of target estimation and maximizes the minimum fairness rate (MFR) amongst communication users subject to the per-antenna power constraint. The superiority of RSMA-assisted ISAC is verifed through simulation results in both terrestrial and satellite scenarios. RSMA is demonstrated to be a powerful multiple access and interference management strategy for ISAC, and provides a better communication-sensing trade-off compared with the conventional benchmark strategies. Consequently, RSMA is a promising technology for next generation multiple access (NGMA) and future networks such as 6G and beyond.
