Capacity-approaching space-time codes for systems employing four transmitter antennas

被引:143
作者
Papadias, CB [1 ]
Foschini, GJ [1 ]
机构
[1] Bell Labs, Lucent Technol, Wireless Commun Res Dept, Holmdel, NJ 07733 USA
关键词
capacity of wireless links; multipleminput-multiple-output (MIMO) systems; smart antennas; space-time codes; space-time processing; transmit diversity;
D O I
10.1109/TIT.2002.808119
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The design of space-time codes that are capable of approaching the capacity of multiple-input-single-output (MISO) antenna systems is a challenging problem, yet one of high practical importance. While a remarkably simple scheme of Alamouti is capable of attaining the channel capacity in the case of two-transmitter and one-receiver antennas (2, 1), no such schemes are known for the case of more than two transmitter antennas. In this correspondence, we propose a family of space-time codes that are especially designed for the case of four-transmitter antennas(1) and that are shown to allow the attainment of a significant fraction of the open-loop Shannon capacity of the (4, 1) channel.
引用
收藏
页码:726 / 733
页数:8
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