Amplify-and-forward cooperative diversity with space-time coded UWB systems

被引：0
|
作者：
Abou-Rjeily, Chadi [1 ,2 ]
Daniele, Norbert [1 ]
Belfiore, Jean-Claude [2 ]
机构：
[1] CEA, LETI, 17 Rue Martyrs, F-38054 Grenoble, France
[2] Ecole Natl Super Telecommun Bretagne, F-75013 Paris, France
来源：
2006 IEEE INTERNATIONAL CONFERENCE ON ULTRA-WIDEBAND, VOLS 1 AND 2 | 2006年
关键词：
D O I：
暂无
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：
In this paper, we examine the impact of spatial diversity on ultra-wideband (UWB) systems. This diversity is exploited by deploying two antennas at the UWB terminals. For single-antenna systems, spatial diversity is exploited in a distributed manner where a neighboring node can help the source in delivering its message to a destination. In particular, two space-time (ST) coding schemes are proposed. The first one is optimal among all totally-real codes having a constant transmitted energy per antenna. Unlike the classical approach of constructing ST codes over infinite fields, the second construction takes the structure of 2-dimensional constellations into consideration in order to propose an appropriate modulation-specific code. These schemes are associated with multi-antenna arrays and with virtual arrays based on the amplify-and-forward (AF) strategy.
引用
收藏
页码：493 / +
页数：2
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