Impact of spatial correlation on the finite-SNR diversity-multiplexing tradeoff

被引：12
|
作者：
Rezki, Z. [1 ]
Haccoun, David [1 ]
Gagnon, Francois
Ajib, Wessarn [2 ]
机构：
[1] Ecole Polytech Montreal, Dept Elect Engn, Montreal, PQ, Canada
[2] Univ Quebec, Dept Comp Sci, Montreal, PQ H3C 3P8, Canada
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2008年 / 7卷 / 04期
关键词：
diversity-multiplexing tradeoff (DMT); finite SNR; outage probability; spatial correlation;
D O I：
10.1109/TWC.2008.060984
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：
The impact of spatial correlation on the performance limits of multielement antenna (MEA) channels is analyzed in terms of the diversity-multiplexing tradeoff (DMT) at finite signal-to-noise ratio (SNR) values. A lower bound on the outage probability is first derived. Using this bound accurate finite-SNR estimate of the DMT is then derived. This estimate allows to gain insight on the impact of spatial correlation on the DMT at finite SNR. As expected, the DMT is severely degraded as the spatial correlation increases. Moreover, using asymptotic analysis, we show that our framework encompasses well-known results concerning the asymptotic behavior of the DMT.
引用
收藏
页码：1184 / 1189
页数：6
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