稀疏码分多址技术发展及前景  

Sparse Code Multiple Access Recent Developments and Future Potentials

作　　者：雷拓峰 倪淑燕 崔亮 程乃平 宋鑫 陈世淼 LEI Tuo-feng;NI Shu-yan;CUI Liang;CHENG Nai-ping;SONG Xin;CHEN Shi-miao(Company of Postgraduate Management,Space Engineering University,Beijing 101416,China;Department of Electronic and Optical Engineering,Space Engineering University,Beijing 101416,China;Unit 66407,Beijing 100144,China)

机构地区：[1]航天工程大学研究生院,北京101416 [2]航天工程大学电子与光学工程系,北京101416 [3]66407部队,北京100144

出　　处：《科学技术与工程》2023年第5期1789-1798,共10页Science Technology and Engineering

基　　金：国家自然科学基金(61805283)。

摘　　要：提升频谱资源利用率是未来移动通信亟待解决的一项重要目标。其中,稀疏码分多址(sparse code multiple access,SCMA)技术具备频谱利用率高、抗干扰性能力强、系统兼容性好等优点,已成为一种非常有前景的非正交多址方案。为了在未来移动通信中进一步发展稀疏码分多址技术,综述了现有稀疏码分多址技术的研究成果,对其研究现状进行了总结分析。首先,分析了现有的码本设计方案,指出了其设计特点以及目前尚存在的问题,并给出相应的解决方案;其次,在解码算法方面,给出了目前两种常见的解码算法,简述了其基本原理,并介绍了一些新兴的解码算法;再次,就SCMA技术与其他技术结合而言,从3个方面总结了目前SCMA技术的研究成果,并探讨了SCMA技术在应用层面潜在的发展的方向;最后,总结了稀疏码分多址技术的发展挑战和趋势。Improving spectrum efficiency is an urgent problem to be solved in future communication systems.Due to the advantages of high spectrum utilization,strong anti-interference and excellent system compatibility,sparse code multiple access(SCMA)has been viewed as a promising technology in non-orthogonal multiple access(NOMA).In order to develop SCMA in future mobile communication,a comprehensive survey of SCMA was provided,the state of the art technologies in SCMA were summarized and analyzed.Firstly,the existing codebook design schemes were analyzed in detail,where the designing procedures were provided.Secondly,the existing problems in codebook design were outlined and the corresponding solutions were provided.In terms of decoding algorithms,two standard decoding algorithms were highlighted,including the basic principle,and some emerging decoding algorithms were also introduced.Thirdly,in the aspect of combining SCMA with other technologies,the current research was summarized in three aspects,the potential development of SCMA applications was discussed.Finally,the challenges and trends of SCMA technology was also provided.

关 键 词：稀疏码分多址技术 码本设计 解码算法 稀疏码分多址应用 

分 类 号：TN914.5[电子电信—通信与信息系统]