Robust exploitation of spatial and multi-user diversity in limited-feedback systems

被引：0
|
作者：
Vicario, JL [1 ]
Antón-Haro, C [1 ]
机构：
[1] CTTC, ES-08034 Barcelona, Spain
来源：
2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5: SPEECH PROCESSING | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, we explore spatial vs. multi-user diversity tradeoffs in a cellular system with limited feedback. When the average feedback per individual user must be kept low, we show that spatial diversity gains provided by antenna selection mechanisms and space-time block coding clearly exceed those of multi-user diversity. Performance assessment is conducted both analytically and by means of computer simulations, in terms of average system capacity and throughput. Closed-form expressions are derived for the SNR densities associated to the different transmission configurations along with an approximate lower bound for system throughput.
引用
收藏
页码：417 / 420
页数：4
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