介绍了用于四发送天线无线通信系统的完全正交的空时分组码、准正交的空时分组码及利用星座旋转的空时分组码的编译码方案；给出了它们的性能仿真结果，并进行了分析比较；得出了在同等条件下，能同时获得全分集和全速率的空时分组码的性能更优的结论。

The schemes about orthogonal STBC codes, quasi-orthogonal STBC codes, and STBC codes using constellation rotations are introduced in this paper. Simulation results and performance comparison of these schemes are presented. In the same condition, the STBC code providing full diversity and full rate outperforms all other codes compared.

TN92