6G新型多址技术探讨

摘要：6G大规模通信场景迫切需要使用新型多址技术解决海量终端随机接入问题，其他多种场景也需要6G新型多址以提高传输速率、降低接入时延、提高传输可靠性，因此研究6G新型多址势在必行。本文回顾了5G非正交多址的标准化历程、总结了各种非正交多址技术的特点，以及在标准化过程中的经验，研究并评估了稀疏交织多址和基于Reed-Muller码的无源多址两种新型多址性能。本研究可为未来6G新型多址的选型和标准化提供有益参考。

关键词：非正交多址；6G新型多址；压缩感知；稀疏交织多址

Abstract: The 6G massive machine type communication urgently requires new multiple access technology to support random access of massive machine type terminals, and other scenarios in 6G systems also need new multiple access to increase the data rate, reduce transmission delay and enhance transmission reliability. Therefore, it is imperative to study the new multiple access for 6G systems. The standardization process of 5G non-orthogonal multiple access and the properties of various non-orthogonal multiple access techniques are reviewed. The experience in the standardization process is then introduced. The performance of two new types of multiple access is studied, including sparse interleave division multiple access and unsourced multiple access based on Reed-Muller code. This study can provide useful references for the scheme selection and the standardization of the 6G multiple access technology in the future.

Keyword: non-orthogonal multiple access, 6G new multiple access, compressed sensing, sparse interleaver multiple access