Transmit Power Minimization for Outage-Constrained Relay Selection over Rayleigh-Fading Channels

被引：10

作者：

Qian, Li Ping ^{[1
,2
]}

Wu, Yuan ^{[3
]}

Chen, Qingzhang ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Comp Sci & Technol, Hangzhou 310023, Zhejiang, Peoples R China

[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710162, Peoples R China

[3] Zhejiang Univ Technol, Coll Informat Engn, Hangzhou 310023, Zhejiang, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2014年 / 18卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Transmit power minimization; relay selection; decode-and-forward; Rayleigh fading channel; outage probability; PERFORMANCE ANALYSIS; NETWORKS; SINGLE;

D O I：

10.1109/LCOMM.2014.2332163

中图分类号：

TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构];

摘要：

This letter studies the relay selection scheme for dual-hop decode-and-forward (DF) relay networks over Rayleigh fading channels. In particular, we first provide the problem formulation that minimizes the total transmit power consumption under the constraints of maximum tolerable outage probability and limited power when relay k cooperates. We then derive a closed-form expression of optimal power allocation that solves this optimization problem. Based on the derived closed-form expression, we can quickly select the best relay that consumes the minimum power during the cooperation of transmission.

引用

页码：1383 / 1386

页数：4

共 18 条

[1]

[Anonymous], 1999, Athena scientific Belmont

[2]

On the Performance of Selection Decode-and-Forward Relay Networks over Nakagami-m Fading Channels [J].