Joint density, for eigenvalues of two correlated complex wishart matrices: Characterization of MIMO systems

被引：10

作者：

Kuo, Ping-Heng ^{[1
]}

Smith, Peter J. ^{[1
]}

Garth, Lee M. ^{[1
]}

机构：

[1] Univ Canterbury, Dept Elect & Comp Engn, Christchurch 1, New Zealand

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2007年 / 6卷 / 11期

关键词：

complex Wishart matrix; eigenvalues; random matrix perturbation; MIMO communication systems; adaptive modulation; Markov models;

D O I：

10.1109/TWC.2007.060309

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：

In this letter, the joint probability density function (PDF) for the eigenvalues of a complex Wishart matrix and a perturbed version of it are derived. The latter version can be used to model channel estimation errors and variations over time or frequency. As an example, the joint PDF is used to calculate the transition probabilities between modulation states in an adaptive MIMO system. This leads to a Markov model for the system. We then use the model to investigate the modulation state entering rates (MSER), the average stay duration (ASD), and the effects of feedback delay on the accuracy of modulation state selection in mobile radio systems. Other applications of this PDF are also discussed.

引用

页码：3902 / 3906

页数：5

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