基于簇用户协作的SC-FDMA中继传输方案  

A relay transmission scheme based on cluster users cooperation in SC-FDMA systems

作　　者：刘海涛[1] 杜超[1] 张化通[1] 

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《电路与系统学报》2011年第3期98-103,共6页Journal of Circuits and Systems

基　　金：天津市自然科学基金(09JCYBJC00600)

摘　　要：该文以长期演进时分双工(long-term evolution time division duplex,LTE TDD)上行链路单载波频分多址(single carrier-frequency division multiple addressing,SC-FDMA)传输方案为基础,提出了一种基于簇用户协作的上行链路中继传输方案,并给出一种低复杂度基站检测算法。本方案采用译码转发工作方式,同一簇内用户相互协作通过三个时隙完成信息传输。仿真研究表明:基于簇用户协作中继传输方案可有效获取用户协作分集增益,提高上行链路传输的可靠性,并保持发射信号的低峰均比(peak-to-average power ratio,PAPR)特性;此外分析表明:基于簇用户协作中继传输方案较传统时分中继方案具有更高的频谱效率。A relay transmission scheme based on cluster users＇ cooperation is proposed for long-term evolution time division duplex（LTE TDD） uplink and a lower complexity detection algorithm for base station is also given in this paper.The Decode-and-Forward scheme is used and the cluster users communicate with the base station cooperatively in three successive slots.The simulations results show that the proposed scheme can fully exploits the spatial cooperation diversity,improves the link reliability and keeps the low peak-to-average power ratio（PAPR）.Moreover,the analysis results show that the proposed scheme has higher frequency efficiency than conventional relay transmission scheme.

关 键 词：协作中继 簇用户 长期演进 单载波频分多址 

分 类 号：TN929.5[电子电信—通信与信息系统]