Multiuser diversity -: Multiplexing tradeoff in MIMO broadcast channels with limited feedback

被引：0
|
作者：
Kountouris, Marios [1 ]
de Francisco, Ruben [2 ]
Gesbert, David [2 ]
Slock, Dirk T. M. [2 ]
Salzer, Thomas [1 ]
机构：
[1] France Telecom, Res & Dev, Issy Les Moulineaux, France
[2] Eurecom Inst, Sophia Antipolis, France
来源：
2006 FORTIETH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, VOLS 1-5 | 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：
We consider joint scheduling and beamforming in a broadcast channel with multiple antennas at the transmitter and a single antenna at the mobile receiver. Perfect channel knowledge is assumed to be available at the receiver while the transmitter is provided with partial channel state information (CSIT) through a limited rate feedback channel. Each user feeds back quantized information regarding the channel vector direction (from a codebook) and a quantized (scalar) channel quality indicator. We identify the tradeoff between multiuser diversity and spatial multiplexing gain given a limited amount of feedback bits. Scaling laws of the above parameters are derived in order to achieve a target rate performance. Our results reveal useful design guidelines for the split of feedback bits for channel quantization and channel quality.
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收藏
页码：364 / +
页数：2
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