Decoding space-time codes with BLAST architectures

被引:44
|
作者
Biglieri, E [1 ]
Taricco, G
Tulino, A
机构
[1] Politecn Torino, Dipartimento Elettron, Turin, Italy
[2] Univ Sannio, Benevento, Italy
关键词
antenna arrays; MIMO systems; space-time codes;
D O I
10.1109/TSP.2002.803342
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We introduce a coding/decoding scheme matched to a "vertical" BLAST architecture; a code has its words evenly split among the transmit antennas. The subcodes so transmitted by each antenna are decoded in sequence to cancel the spatial interference while a final decoding step is performed on the whole code. We also examine the behavior of zero-forcing (ZF) and minimum-mean-square error (MMSE) BLAST by comparing their error probabilities with those resulting from optimum, i.e., maximum-likelihood (ML), processing. Since, with vertical BLAST, ordering of the columns of the channel-gain matrix is crucial, we also study the performance of algorithms intended to find an optimal (or mildly suboptimal) ordering.
引用
收藏
页码:2547 / 2552
页数:6
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