Both non-orthogonal multiple access(NOMA)and in-band full-duplex(FD)tech-nologies can effectively improve the utilization of wireless spectrum resources.The existing studies on FD relay communication systems for downlink NOMA use a fixed decoding order and do not fully consider the randomness effect of the channel and the possibility of other de-coding orders.An adaptive decoding strategy is used and a comprehensive analysis of the outage performance of the downlink NOMA-FD relay system is derived.The exact outage performance of the system under the imperfect successive interference cancellation technique is fully considered in the analysis,and the approximate results under a high signal-to-noise ratio are derived.The results show that the decoding strategy used in this study has a con-siderable outage performance improvement,compared with the related studies of the same model.
关键词
非正交多址接入/全双工/协作中继/串行干扰消除/中断概率
Key words
non-orthogonal multiple access(NOMA)/full-duplex(FD)/cooperative relay/successive interference cancellation/outage probability
维普
万方数据