基于空时频编码的OFDM系统设计  

A scheme of STFBC-OFDM system

作　　者：刘雪飞[1] 庞伟正[1] 张建华[1] 贾宝 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2008年第2期25-28,共4页Applied Science and Technology

摘　　要：空时编码已经成为对抗多径衰落的一种有效方法,近年来已成为研究热点.本文针对OFDM(正交频分复用)系统提出了一种空、时、频分组码的编码方案,这种编码在相同的码速率下,可以实现比STBC更大的分集度和更高的编码增益,而且还具有计算量小和实现容易等优点.Space-time coding has been a hot topic of research as an effective way to overcome multi-path fading en- viroments. This paper gives a structure based on STFBC-OFDM system. By using it , higher diversity orders and coding gains can be achieved than STBC at the same coding rate, and has the advantages of making the caculation more lower and having a more lower implementation complexity.

关 键 词：正交频分复用 空时频编码 空时编码 空频分集 空时分集 

分 类 号：TN914[电子电信—通信与信息系统]