基于空时频编码的OFDM系统设计

A scheme of STFBC-OFDM system

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.