Effect of Multiple Antennas at the Source on Outage Probability for Amplify-and-Forward Relaying Systems

被引：46

作者：

Min, Hyunkee ^{[1
]}

Lee, Sungeun ^{[1
]}

Kwak, Kyungchul ^{[1
]}

Hong, Daesik ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2009年 / 8卷 / 02期

关键词：

Amplify-and-forward (AF) relaying; outage probability; maximum-ratio-transmission (MRT);

D O I：

10.1109/TWC.2009.071332

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 amplify-and-forward (AF) relaying system considered here consists of a source node with All transmit antennas, and relay and destination nodes with a single antenna each. The closed-form expressions for the outage probabilities for maximum-ratio-transmission (MRT) at the source are presented for some specific values of M. Numerical results show that increasing M from 1 to 2 can achieve roughly a 3dB SNR gain, guaranteeing the same outage probability. However, we discover that for M >= 3, the additional gain compared to M = 2 decreases quickly as the SNR increases. Therefore, increasing M above 3 does not achieve significantly greater gain over M = 2 at high SNR.

引用

页码：633 / 637

页数：5

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