融合通用滤波多载波的非正交多址接入技术

典型的非正交多址接入技术（Non-orthogonal Multiple Access,NOMA）有稀疏码分（Sparse Code Multiple Access，SCMA）、多用户共享（Multi-user Shared Access，MUSA）、图样分割（Pattern Division Multiple Access，PDMA）等。为了研究这三种典型的NOMA技术与通用滤波多载波复用技术（Universal Filtered Multi-carrier,UFMC）技术结合后的性能，将三种典型的NOMA与UFMC结合，然后分析比较了它们的误码率性能，通过仿真对比得出UFMC-SCMA系统相比其他两种结合系统具有更好的系统性能。为了更进一步验证UFMC-SCMA系统的优点，还将其与热门的OFDM-SCMA系统进行对比。研究结果表明，由于UFMC-SCMA系统具有码本的稀疏性以及近似最优的信息传递算法（Message Passing Algorithm，MPA）检测方案，并采用子频带滤波，有效降低了误码率并提高了频谱效率，因而其具有较好的系统性能。

Non-orthogonal multiple access technology combined with universal filtered multi-carrier

Typical non-orthogonal multiple access(NOMA) technologies include sparse code multiple access(SCMA),multi-user shared access(MUSA) and pattern division multiple access(PDMA) technology,etc.To research the performance of three typical NOMA technologies combined with universal filtered multi-carrier(UFMC) technology,this paper firstly combines the three typical NOMA technologies with UFMC,and compares their bit error rate(BER) performances.Furthermore,in order to verify the advantages of the UFMC-SCMA system,it also compares the BER and spectrum efficiency of the UFMC-SCMA system with the OFDM-SCMA system respectively.Simulation results show that UFMC-SCMA has better system performance due to the sparsity of the codebook of UFMC-SCMA system and the approximate optimal message passing algorithm(MPA) detection algorithm,and also because sub-band filtering is used,the BER is reduced effectively and the spectral efficiency is improved.