CSI Feedback in Correlated Slow-Fading Channels

被引：6

作者：

Makki, Behrooz ^{[1
]}

Eriksson, Thomas ^{[1
]}

机构：

[1] Chalmers, Dept Signals & Syst, S-41296 Gothenburg, Sweden

来源：

IEEE COMMUNICATIONS LETTERS | 2011年 / 15卷 / 12期

关键词：

Slow-fading correlated channel; CSI feedback; channel average rate; feedback compression;

D O I：

10.1109/LCOMM.2011.101011.111319

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This letter studies the effect of quantized channel state information (CSI) feedback on the average rate of correlated channels. Demonstrating the general rate optimization problem, the results are obtained for both delayed and delay-free feedback conditions under different short- and long-term power allocation strategies. We also evaluate the effect of adaptive CSI quantization on the channel average rate. Analytical and numerical results show that exploiting the channel memory not only increases the forward channel data transmission efficiency but also can lead to dramatic feedback rate reduction.

引用

页码：1294 / 1297

页数：4

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