基于选择性映射的MIMO-OFDM系统中PAPR减小技术  

PAPR reduction for MIMO-OFDM system using selective mapping

作　　者：杨娟[1] 颜彪[1] 朱一欢[1] 王海洋[1] 杨学凯[2] 

机构地区：[1]扬州大学信息工程学院,江苏扬州225009 [2]盐城纺织职业技术学院,江苏盐城224001

出　　处：《扬州大学学报（自然科学版）》2007年第1期32-35,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：江苏省高校自然科学基金资助项目(06KJD510028)

摘　　要：针对MIMO-OFDM系统模型,在传统的独立选择性映射(SLM)方案基础上,提出一种改进的SLM方案,大大减小了辅助信息量,并着重对MIMO-OFDM系统中SLM技术采用的各种相位序列进行探讨.仿真结果表明,对于MIMO-OFDM系统中峰平功率比(PAPR),选择Golay序列、随机序列以及Shapiro-Rudin序列作为SLM的相位序列效果较好,而选择OVSF序列和Walsh-Hadamard序列效果较差.The system model of MIMO-OFDM is analyzed first in this paper. Then a new improved SLM is studied based on individual SLM scheme, which can reduce the side information greatly. Finally, the varied phase sequences used in SLM are also investigated emphatically. The simulation results indicate that when Golay sequence, random sequence and Shapiro-Rudin sequence are selected as the phase sequence used in SLM respectively, the PAPR performance of MIMO-OFDM is better than that when OVSF sequence and Walsh-Hadamard sequence are selected.

关 键 词：MIMO—OFDM 峰平功率比 选择性映射法 相位序列 

分 类 号：TN914.4[电子电信—通信与信息系统]