一种基于线性分散码的空时协作方案

Space-time cooperative scheme based on liner dispersion codes

在协作分集系统中使用线性分散码进行空时协作,在高速率的情况下,误码率性能要优于传统的正交分组空时码空时协作分集系统.通过选择不同码率的线性分散码,在误码率性能和传输速率方面进行折中.与采用较低码率的线性分散码的系统相比,在源和中继之间的信道状况较好时,采用较高码率的线性分散码可以在牺牲很小的误码率性能的情况下获得更高的传输速率,使线性分散码空时协作系统具有更高的灵活性.

The space-time cooperative diversity scheme based on liner dispersion codes outperforms in BER performance the traditional OSTBC cooperative diversity scheme in a high rate system. By selecting different rate liner dispersion codes, the system can trade off between BER performance and data rate. Compared with the system adopting a lower rate liner dispersion code, when the channel condition is good between the source and relays, the system adopting a higher rate liner dispersion code can gain a higher data rate by sacrificing the BER performance just a bit.