A Low-Complexity Energy-Efficient Power Allocation and Rate Adaptation Scheme for Relay-Assisted Systems

被引：5

作者：

Wang, Xiaoming ^{[1
]}

Zheng, Fu-Chun ^{[2
]}

Zhu, Pengcheng ^{[1
]}

You, Xiaohu ^{[1
]}

机构：

[1] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China

[2] Univ Reading, Sch Syst Engn, Reading RG6 6AY, Berks, England

来源：

IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 01期

基金：

国家高技术研究发展计划(863计划);

关键词：

Energy efficiency; relay systems; imperfect CSI; amplify-and-forward; NETWORKS;

D O I：

10.1109/LCOMM.2014.2372003

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, an energy-efficient power and rate adaptation algorithm for amplify-and-forward (AF) relay systems is studied with imperfect channel statement information (CSI) at transmitters. In the proposed scheme, energy efficiency (EE) is maximized under the maximum transmit power constraint, the minimum system data-rate constraint and the target packet outage probability constraint. In addition, to solve the EE maximization problem, we propose a low-complexity iterative algorithm. Numerical results illustrate the effectiveness of the proposed algorithm.

引用

页码：94 / 97

页数：4

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