Optimized Design of MIMO Systems with Imperfect CSI

YANG Liang; QIN Jia-yin

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Optimized Design of MIMO Systems with Imperfect CSI

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- Optimized Design of MIMO Systems with Imperfect CSI
- Acta Electronica Sinica Vol. 37, Issue 1, Pages: 198-201(2009)
- 作者机构：
  
  1. 暨南大学电子工程系,广东,广州,510632
  2. 中山大学电子与通信工程系,广东,广州,510275
  3. 暨南大学电子工程系广东广州,510632
  4. 中山大学电子与通信工程系广东广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.23
- Published：2009
- 稿件说明：
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YANG Liang, QIN Jia-yin. Optimized Design of MIMO Systems with Imperfect CSI[J]. Acta Electronica Sinica, 2009, 37(1): 198-201.
DOI：

YANG Liang, QIN Jia-yin. Optimized Design of MIMO Systems with Imperfect CSI[J]. Acta Electronica Sinica, 2009, 37(1): 198-201. DOI：

摘要

本文研究了不完全信道状态信息(CSI)对多输入多输出(MIMO)系统容量的影响.基于平均功率和平均误码率的约束条件

我们提出了一种利用不完全CSI进行功率自适应调制的优化设计方案.根据Wishart矩阵的统计分布

我们导出了该系统容量的封闭表达式.研究结果表明:在具有不完全CSI的MIMO系统中

利用不完全CSI进行设计可以显著地提高系统的容量.

Abstract

In this paper

we investigate the effect of imperfect channel state information (CSI) on the capacity of multiple-input multiple-output (MIMO) systems.A design of variable power adaptive modulation using imperfect CSI

subject to an average power and BER constraint

is proposed.Based on the statistic distribution of Wishart matrix

we derive the capacity expression of such systems in a closed-form.The results show that our design is more robust to CSI imperfections than the system designed under a perfect CSI assumption.

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