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

Handle URI:
http://hdl.handle.net/10754/230312
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 report, 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.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
King Abdullah University of Science and Technology
Issue Date:
Jun-2012
Type:
Technical Report
Appears in Collections:
Technical Reports; Physical Sciences and Engineering (PSE) 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.accessioned2012-06-23T19:50:58Z-
dc.date.available2012-06-23T19:50:58Z-
dc.date.issued2012-06en
dc.identifier.urihttp://hdl.handle.net/10754/230312en
dc.description.abstractIn this report, 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.en
dc.language.isoenen
dc.publisherKing Abdullah University of Science and Technologyen
dc.titleEnergy-Efficient Power Allocation for Fixed-Gain Amplify-and-Forward Relay Networks with Partial Channel State Informationen
dc.typeTechnical Reporten
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
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