Paper Info
Title
Power Adaptation for Energy Efficient Bi-directional Relaying with Quality-of-Service Requirement and Individual Peak-Power Limit.
Abstract
This paper addresses an optimal power adaptation (PA) problem of a two-time-slot bi-directional relaying network with a half-duplex amplify-and-forward relay. Unlike the existing studies, our goal is to develop effective PA strategies that can dynamically adjust the transmit-power levels of all the terminals to achieve energy efficiency, while satisfying the individual peak-power limit on each terminal and the quality-of-service (QoS) requirement of the network. By using the instantaneous channel state information (ICSI) and the statistical CSI (SCSI) knowledge, respectively, and with the aid of traffic information, the PA problem is analytically solved, leading to the so-called ICSI and SCSI based PA strategies with closed-form PA solutions for individual transmit-powers at the relay and the two end-terminals. Simulation results have verified the correctness of the derived expressions and confirmed the efficiency of our proposed strategies. It is shown that the proposed PA strategies can significantly reduce the total transmit-power of the network with guaranteed network QoS.
Year
DOI
Venue
2017
10.1007/s11277-016-3921-5
Wireless Personal Communications
Keywords
Field
DocType
Bi-directional relaying, Power adaptation, Energy efficiency, Quality-of-service, Individual peak-power limit
SCSI,Expression (mathematics),Computer science,Efficient energy use,Correctness,Computer network,Quality of service,Relay,Channel state information
Journal
Volume
Issue
ISSN
95
3
1572-834X
Citations 
PageRank 
References 
0
0.34
16
Authors
4
Name
Order
Citations
PageRank
Xiaodong Ji113717.93
Zhihua Bao24410.32
Chen Xu301.35
Jian-Feng Gu420.75