ON THE BENEFITS OF SUBSPACE DIMENSION REDUCTION FOR GRASSMANNIAN MULTIUSER BEAMFORMERS

被引：0
|
作者：
Xiong, Zhilan [1 ]
Cumanan, Kanapathippillai [1 ]
Lambotharan, Sangarapillai [1 ]
机构：
[1] Univ Loughborough, Adv Signal Proc Grp, Loughborough LE11 3TU, Leics, England
来源：
2009 IEEE/SP 15TH WORKSHOP ON STATISTICAL SIGNAL PROCESSING, VOLS 1 AND 2 | 2009年
关键词：
Block diagonalization; MIMO; multiuser; limited-feedback; Grassmannian codebook; MIMO BROADCAST CHANNELS; LIMITED FEEDBACK; BLOCK DIAGONALIZATION;
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：
Block diagonalization (BD) is a linear precoding technique to eliminate inter-user interference (IUI) in multiple-input multiple-output (MIMO) multiuser wireless communication systems. In this paper, a limited feedback-based BD algorithm with Grassmannian codebook is studied. When the number of bits available for feeding back channel state information (CST) from multiple terminals to the basestation (BS) is limited, we demonstrate feeding back singular vector corresponding to the largest singular value provides a better capacity performance as compared to feeding back the whole signal subspace.
引用
收藏
页码：657 / 660
页数：4
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