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.

引用

页码：364 / +

页数：2

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