Energy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Information

Handle URI:
http://hdl.handle.net/10754/244153
Title:
Energy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Information
Authors:
Zafar, Ammar ( 0000-0001-8382-7625 ) ; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Chen, Yunfei; Radaydeh, Redha M.
Abstract:
In this letter, energy-efficient transmission and power allocation for fixed-gain amplify-and-forward relay networks with partial channel state information (CSI) are studied. In the energy-efficiency problem, the total power consumed is minimized while keeping the signal-to-noise-ratio (SNR) above a certain threshold. In the dual problem of power allocation, the end-to-end SNR is maximized under individual and global power constraints. Closed-form expressions for the optimal source and relay powers and the Lagrangian multiplier are obtained. Numerical results show that the optimal power allocation with partial CSI provides comparable performance as optimal power allocation with full CSI at low SNR. © 2012 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Citation:
Zafar A, Radaydeh RM, Chen Y, Alouini M-S (2012) Energy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Information. IEEE Wireless Communications Letters 1: 553-556. doi:10.1109/WCL.2012.080112.120318.
Journal:
IEEE Wireless Communications Letters
Issue Date:
16-Sep-2012
DOI:
10.1109/WCL.2012.080112.120318
Type:
Article
Description:
This paper has been accepted in IEEE Wireless Communications Letters.
ISSN:
2162-2337; 2162-2345
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6261329
Appears in Collections:
Articles; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZafar, Ammaren
dc.contributor.authorAlouini, Mohamed-Slimen
dc.contributor.authorChen, Yunfeien
dc.contributor.authorRadaydeh, Redha M.en
dc.date.accessioned2012-09-16T16:16:59Z-
dc.date.available2012-09-16T16:16:59Z-
dc.date.issued2012-09-16en
dc.identifier.citationZafar A, Radaydeh RM, Chen Y, Alouini M-S (2012) Energy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Information. IEEE Wireless Communications Letters 1: 553-556. doi:10.1109/WCL.2012.080112.120318.en
dc.identifier.issn2162-2337en
dc.identifier.issn2162-2345en
dc.identifier.doi10.1109/WCL.2012.080112.120318en
dc.identifier.urihttp://hdl.handle.net/10754/244153en
dc.descriptionThis paper has been accepted in IEEE Wireless Communications Letters.en
dc.description.abstractIn this letter, energy-efficient transmission and power allocation for fixed-gain amplify-and-forward relay networks with partial channel state information (CSI) are studied. In the energy-efficiency problem, the total power consumed is minimized while keeping the signal-to-noise-ratio (SNR) above a certain threshold. In the dual problem of power allocation, the end-to-end SNR is maximized under individual and global power constraints. Closed-form expressions for the optimal source and relay powers and the Lagrangian multiplier are obtained. Numerical results show that the optimal power allocation with partial CSI provides comparable performance as optimal power allocation with full CSI at low SNR. © 2012 IEEE.en
dc.language.isoenen
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6261329en
dc.rightsArchived with thanks to IEEE Wireless Communications Letters.en
dc.titleEnergy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Informationen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Wireless Communications Lettersen
dc.eprint.versionPre-printen
dc.contributor.institutionSchool of Engineering, University of Warwick, Coventry, UK, CV47AL, United Kingdomen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
dc.identifier.arxividarXiv:1211.5931en
kaust.authorZafar, Ammaren
kaust.authorRadaydeh, Redha Mahmoud Meslehen
kaust.authorAlouini, Mohamed-Slimen
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