Effect of signal and noise mutual coupling on MIMO channel capacity

被引：10
|
作者：
Krusevac, Snezana M. [1 ]
Kennedy, Rodney A.
Rapajic, Predrag B.
机构：
[1] Australian Natl Univ, Res Sch Informat Sci & Engn, Canberra, ACT 0200, Australia
[2] Univ Greenwich, Chatham, Kent, England
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2007年 / 40卷 / 03期
关键词：
mutual coupling; thermal noise; MIMO channel capacity;
D O I：
10.1007/s11277-006-9193-8
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper we analyze the impact of mutual coupling on MIMO channel capacity, considering its effect on both signal and thermal noise. We calculate noise correlation matrix in the multi-antenna system with closely spaced antenna by applying Nyquist's thermal noise theorem. Then, we employ the noise correlation matrix in the channel capacity formula, which enables the identification of thermal noise correlation contribution on the MIMO channel capacity. In addition, we examine the variations in the mean branch signal-to-noise ratios (SNR) due to the noise correlation. Our simulation results corroborate the theoretical analysis that mean and outage MIMO channel capacity is underestimated if noise correlation due to mutual coupling effect is not accounted for.
引用
收藏
页码：317 / 328
页数：12
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