Strict Suboptimality of Selection Amplify-and-Forward Relaying Under Global Channel Information

被引：2

作者：

Nikjah, Reza ^{[1
]}

Beaulieu, Norman C. ^{[1
]}

机构：

[1] Univ Alberta, Dept Elect & Comp Engn, Elect & Comp Engn Res Facil ECERF, Edmonton, AB T6G 2V4, Canada

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2009年 / 57卷 / 10期

关键词：

Amplify-and-forward relaying; cooperative communication; fractional programming; power allocation; power optimization; selection diversity; OPTIMAL POWER ALLOCATION; WIRELESS NETWORKS; DIVERSITY; PROTOCOLS; RATIO;

D O I：

10.1109/TCOMM.2009.10.080090

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：

Selection amplify-and-forward (SAF) relaying, which has been shown to be optimal under the constraints of localized channel information at the relays and a constant relay power allocation (PA) template, is shown to be globally strictly suboptimal. A necessary condition for the outage optimality of the SAF PA, and an exponentially vanishing upper bound on the probability of the SAF optimality are derived.

引用

页码：2918 / 2922

页数：5

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