面向卫星通信与导航的下一代多址接入

摘要：面向卫星通信与导航（SCAN）系统多样复杂的应用场景，下一代多址接入（NGMA）技术可以提供更高的通信速率、更大的接入数量和更广的覆盖面积。面向SCAN系统，对基于多功能NGMA、基于多资源NGMA和基于多技术NGMA展开研究，分析了现有的NGMA技术对SCAN系统的性能增益。最后，总结SCAN-NGMA面临的挑战，展望了未来发展的方向，为SCAN-NGMA架构的进一步演进提供了参考依据。

关键词：NGMA；SCAN；多功能NGMA；多资源NGMA；多技术NGMA

Abstract: In the context of diverse and intricate application scenarios within satellite communication and navigation (SCAN) systems, next generation multiple access (NGMA) technology offers the potential for increased communication rates, expanded access capacity, and broader coverage. It focuses on investigating the application of multi-function-based NGMA, multi-resource-based NGMA, and multi-technology-based NGMA within the SCAN system. It also analyzes the performance enhancements that existing NGMA technology can bring to the SCAN system. Furthermore, this paper concludes by summarizing the challenges inherent in SCAN-NGMA system. It also looks ahead to the future development direction, providing valuable insights that serve as a reference for the ongoing evolution of SCAN-NGMA architecture.

Keywords: NGMA; SCAN; multi-function NGMA; multi-resource NGMA; multi-technology NGMA