旋转和缩放的Alamerican编码
Rotated and Scaled Alamouti Coding
摘要：
基于重复的重传在Alamouti调制[1998]中用于$2\times 2$ MIMO系统。我们建议使用所谓的“缩放重复”与旋转一起代替普通的重复。结果表明，旋转和缩放的Alamanti码具有硬判决性能，仅略差于Golden码[2005]，最有名的$2\times 2$空时码。解码的黄金码需要一个详尽的搜索所有码字，而我们的旋转和缩放的Alamandro码可以解码与可接受的复杂度然而。
英文摘要：
Repetition-based retransmission is used in Alamouti-modulation [1998] for $2\times 2$ MIMO systems. We propose to use instead of ordinary repetition so-called "scaled repetition" together with rotation. It is shown that the rotated and scaled Alamouti code has a hard-decision performance which is only slightly worse than that of the Golden code [2005], the best known $2\times 2$ space-time code. Decoding the Golden code requires an exhaustive search over all codewords, while our rotated and scaled Alamouti code can be decoded with an acceptable complexity however.
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