The asymptotic capacity of multiple-antenna Rayleigh-fading channels

被引：22

作者：

Kamath, MA ^{[1
]}

Hughes, BL ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Elect & Comp Engn, Ctr Adv Comp & Commun, Raleigh, NC 27695 USA

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 2005年 / 51卷 / 12期

基金：

美国国家科学基金会;

关键词：

capacity; fading channels; multiple-antenna communication; random matrix theory; space-time coding;

D O I：

10.1109/TIT.2005.858966

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We consider the asymptotic behavior of the capacity of multiple-antenna Rayleigh-fading channels in the limit as the transmit and receive arrays become large. We show that the capacity converges in distribution to a Gaussian random variable, and give closed-form formulas for its mean and variance. These results enable us to derive the first asymptotic formula for outage rates, as well as a sharper estimate of the error in previously reported asymptotic formulas for ergodic capacity. Although these formulas are asymptotic, we show by simulation that they are often quite accurate, even for relatively small arrays.

引用

下载

页码：4325 / 4333

页数：9

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