ABBA码的两种改进方案及其性能仿真

Two improved codes for Quasi-orthogonal space-time block code ABBA

ABBA码是一种可用于三个以上发送天线系统的准正交空时分组编码。该方案能获得最大传输速率,但不能提供最大的分集增益。为了改进这一不足,本文介绍了它的两种改进方案。这两种方案分别利用了星座旋转的方法和发射端已知的信道状态信息来增加ABBA码的分集增益,仿真结果表明这两种改进方案的误码率性能较原有的ABBA码性能均有一定程度的改善。

ABBA-code is a quasi-orthogonal space-time block code for 3+ Tx antennas. It has full transmission rate, but could not provide full diversity order. In this paper, we introduce two rate 1 coding schemes with full diversity to overcome this limitation, which use constellation rotations or channel state information available at the emitter. The simulation results show that these two improved schemes have better performance.