Multiple access is the base for increasing the capacity in multi-user communication networks. However, the growing demand for higher data rates and the number of users who requires communication services has led to the scarcity of orthogonal resources in current wireless communications. On the other hand, integrating the satellite within terrestrial networks as an initiative of 3GPP since its Release 15 entails the need for new forms of multiple access between terrestrial and non-terrestrial users. This paper studies constellation schemes as a new domain to enhance the state-of-the-art multiple-access techniques for future communication technologies employing non-coherent communications with massive MIMO. In addition, we propose a hybrid model between the classic access methods such as Time Division Multiple Access (TDMA) or Frequency Division Multiple Access (FDMA), the emerging models of non-orthogonal multiple access (NOMA) and the proposed domain of the constellation based on non-coherent massive multiple-input multiple-output (MIMO) schemes. This model is discussed for different scenarios in satellite communications that help increase the system's capacity and avoid interference between terrestrial and non-terrestrial users.

翻译：多址接入是多用户通信网络中提升容量的基础。然而，对更高数据速率和通信服务用户数量日益增长的需求，导致当前无线通信中正交资源的稀缺。另一方面，自3GPP第15版起将卫星集成到地面网络的举措，要求在地面与非地面用户之间建立新型多址接入方式。本文研究星座方案作为新域，通过采用非相干通信与大规模MIMO技术，增强面向未来通信技术的最先进多址接入方法。此外，我们提出一种混合模型，融合了时分多址（TDMA）或频分多址（FDMA）等经典接入方法、新兴的非正交多址接入（NOMA）模式以及基于非相干大规模多输入多输出（MIMO）方案的星座域。该模型针对卫星通信的不同场景进行讨论，有助于提升系统容量并避免地面与非地面用户间的干扰。