Quantized feedback design for MIMO broadcast channels
被引:0
作者:
Kim, Tung T.
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机构:
Royal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, SwedenRoyal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, Sweden
Kim, Tung T.
[1
]
Bengtsson, Mats
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机构:
Royal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, SwedenRoyal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, Sweden
Bengtsson, Mats
[1
]
Skoglund, Mikael
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机构:
Royal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, SwedenRoyal Inst Technol, Sch Elect Engn, SE-10044 Stockholm, Sweden
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.
机构:
Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
Lau, V
Liu, YJ
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机构:Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
Liu, YJ
Chen, TA
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机构:Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
机构:
Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
Lau, V
Liu, YJ
论文数: 0引用数: 0
h-index: 0
机构:Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
Liu, YJ
Chen, TA
论文数: 0引用数: 0
h-index: 0
机构:Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China