采用子载波分组和空时码的随机映射MIMO OFDM系统  

Random signal mapped MIMO OFDM system using subcarrier grouping and space-time codes

作　　者：肖海勇[1] 毕光国[1] 张彭[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《电路与系统学报》2008年第4期130-134,共5页Journal of Circuits and Systems

基　　金：自然基金重大项目资助课题(60496311)

摘　　要：本文提出了一种在子载波分组上进行空时编码的随机信号映射MIMOOFDM系统。采用已有的快衰落信道上的空时码在每个分组上编码,随机映射后在多个天线上发送,接收端就能够获得大部分的空间和频率分集。仿真表明系统在MIMO多径衰落信道中能够获得好的性能。A system using STTC to code on subcarrier groups in RSM MIMO OFDM is proposed. Using STC for fast fading channels to code on each subcarrier groups, random signal mapping codes are transmitted on every antenna, and then the receiver end can collect a large part of the space diversities and the frequency diversities. Simulation results show that the system have good performance on multi-path MIMO fading channels.

关 键 词：子载波分组(SG) 空时码(STC) 空时格栅码(STTC) 随机信号映射(RSM) MIMO OFDM 快衰落信道 空间分集 频率分集 时间分集 

分 类 号：TN92[电子电信—通信与信息系统]