块衰落信道下基于循环码的满分集空时分组码

Full-diversity STBCs from Cyclic-codes in Block-fading Channels

研究证明当发射天线数大于2时,不存在可以同时获得满分集增益和最大码率的复正交空时分组码。而以牺牲正交性和部分分集增益为代价来获得更高传输速率的非正交空时分组码的误码率性能又下降了。在有限域空间Fqm下利用块衰落信道下由循环码设计构造的空时分组码可以获得满分集增益且提高了编码速率。

According to the theory, it has been proved that a complex orthogonal space -time block code that provides full diversity and full transmission rate is not feasible for more than two antennas. Whereas the performance of non - orthogonal space - time block codes which obtain full transmission rate at the cost of orthogonality and partial diversity gain may be degraded. In this report, we obtain designs for Full -diversity Space Time Block Codes （STBCs） suitable for Block fading channels from n length cyclic codes over Fq^m. The scheme has better coding rate.