STBC-OFDM系统的译码简化和性能分析  

On Decoding Algorithm and Performance of STBC-OFDM System

作　　者：刘义[1] 王玲[1] 

机构地区：[1]湖南师范大学物理与信息科学学院,长沙410081

出　　处：《信息安全与通信保密》2006年第9期70-71,74,共3页Information Security and Communications Privacy

基　　金：湖南省自然科学基金(No.03JJY3012);湖南省信息产业厅基金(No.897202004)

摘　　要：文章根据空时分组码的正交特性,提出了一种频率选择性衰落信道下STBC-OFDM系统的简化译码算法。对STBC-OFDM系统传统的译码方法与论文的简化译码算法的仿真结果和计算复杂度进行了比较,并进一步对STBC-OFDM系统的性能进行了分析。研究结果表明:论文的简化译码算法只是降低了计算复杂度,没有影响STBC-OFDM系统最大限度地利用系统所有可用的分集资源。According to the special orthogonal structure of space-time block coeds （STBC）, a simplified decoding algorithm of STBC-OFDM system is proposed. In addition, we have analyzed the performance of the STBC-OFDM system. Comparing with the results and analyzing the computing complexities of traditional decoding algorithm in the STBC- OFDM system and the simplified deciding algorithm of the paper. It has shown that the system is in its ability to exploit all the available diversity resources, and the decoding algorithm of the system has a lower computing complexities.

关 键 词：空时分组码 分集技术 正交频分复用 

分 类 号：TN919.32[电子电信—通信与信息系统]