空时Turbo网格码的MIMO-OFDM系统性能研究  

Research of MIMO-OFDM System Based on ST Turbo TC Code

作　　者：陈敏[1] 吴耀军[1] 金小成[1] 

机构地区：[1]华东理工大学信息科学与工程学院,上海200237

出　　处：《现代电子技术》2008年第9期7-9,12,共4页Modern Electronics Technique

摘　　要：分析了OFDM基本原理并构建了MIMO-OFDM系统的模型,接着阐述了空时编码技术在OFDM中的应用,提出了在OFDM系统中采用空时Turbo网格编码的方案,详细分析了ST Turbo TC编码器和译码器原理,最后对系统进行了仿真,并分析了仿真结果。系统仿真结果表明采用Turbo网格编码的系统性能优于采用一般空时编码的MIMO-OFDM系统。Basic principle of OFDM technology is analysed, frame work of MIMO - OFDM system is established as well. The significance of space time coding applied to OFDM system, the combination of ST Turbo TC code concatenated with OFDM system are proposed,and the principles of ST Turbo TC encoding and ST Turbo TC decodeing is analysed. Finally we simulate the proposed scheme. The simulation results based on MIMO - OFDM system demonstrate that the performance of the turbo space - time coding is better than the space - time coding in MIMO - OFDM system.

关 键 词：多输入多输出 正交频分复用 空时编码 空时格码 

分 类 号：TN911[电子电信—通信与信息系统]