Quantized feedback design for MIMO broadcast channels

被引:0
作者
Kim, Tung T. [1 ]
Bengtsson, Mats [1 ]
Skoglund, Mikael [1 ]
机构
[1] Royal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, Sweden
来源
2007 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL III, PTS 1-3, PROCEEDINGS | 2007年
关键词
fading channels; quantization; broadcast channels; feedback communications; information rates;
D O I
暂无
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Low-rate feedback design for multiple-input multiple-output broadcast channels is studied under a vector quantization framework. Iterative algorithms are proposed to design the partial feedback link, the scheduler, and the linear precoding code-book. It is demonstrated that the gain due to multi-user diversity can be significant even with heavily quantized channel state information at the transmitter. Our results highlight the potential of multi-user diversity, even with simple schemes and extremely-low-rate feedback.
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页码:1 / +
页数:2
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