Enhancing the efficiency of constrained dual-hop variable-gain AF relaying under nakagami-m fading

Handle URI:
http://hdl.handle.net/10754/563616
Title:
Enhancing the efficiency of constrained dual-hop variable-gain AF relaying under nakagami-m fading
Authors:
Zafar, Ammar ( 0000-0001-8382-7625 ) ; Radaydeh, Redha Mahmoud; Chen, Yunfei; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
This paper studies power allocation for performance constrained dual-hop variable-gain amplify-and-forward (AF) relay networks in Nakagami- $m$ fading. In this context, the performance constraint is formulated as a constraint on the end-to-end signal-to-noise-ratio (SNR) and the overall power consumed is minimized while maintaining this constraint. This problem is considered under two different assumptions of the available channel state information (CSI) at the relays, namely full CSI at the relays and partial CSI at the relays. In addition to the power minimization problem, we also consider the end-to-end SNR maximization problem under a total power constraint for the partial CSI case. We provide closed-form solutions for all the problems which are easy to implement except in two cases, namely selective relaying with partial CSI for power minimization and SNR maximization, where we give the solution in the form of a one-variable equation which can be solved efficiently. Numerical results are then provided to characterize the performance of the proposed power allocation algorithms considering the effects of channel parameters and CSI availability. © 2014 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Signal Processing
Issue Date:
Jul-2014
DOI:
10.1109/TSP.2014.2329267
Type:
Article
ISSN:
1053587X
Sponsors:
The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Joakim Jalden. This work was supported by a Grant from King Abdulaziz City of Science and Technology (KACST). The work ofY. Chen was supported in part by the Open Research Project of the State Key Laboratory of Industrial Control Technology, Zhejiang University, China (Grant IC14T40). This work appeared in part in the Proceedings of the IEEE Global Communications Conference (GLOBECOM' 2013) Atlanta, GA, USA, Dec. 9-13, 2013.
Appears in Collections:
Articles; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZafar, Ammaren
dc.contributor.authorRadaydeh, Redha Mahmouden
dc.contributor.authorChen, Yunfeien
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-03T12:04:26Zen
dc.date.available2015-08-03T12:04:26Zen
dc.date.issued2014-07en
dc.identifier.issn1053587Xen
dc.identifier.doi10.1109/TSP.2014.2329267en
dc.identifier.urihttp://hdl.handle.net/10754/563616en
dc.description.abstractThis paper studies power allocation for performance constrained dual-hop variable-gain amplify-and-forward (AF) relay networks in Nakagami- $m$ fading. In this context, the performance constraint is formulated as a constraint on the end-to-end signal-to-noise-ratio (SNR) and the overall power consumed is minimized while maintaining this constraint. This problem is considered under two different assumptions of the available channel state information (CSI) at the relays, namely full CSI at the relays and partial CSI at the relays. In addition to the power minimization problem, we also consider the end-to-end SNR maximization problem under a total power constraint for the partial CSI case. We provide closed-form solutions for all the problems which are easy to implement except in two cases, namely selective relaying with partial CSI for power minimization and SNR maximization, where we give the solution in the form of a one-variable equation which can be solved efficiently. Numerical results are then provided to characterize the performance of the proposed power allocation algorithms considering the effects of channel parameters and CSI availability. © 2014 IEEE.en
dc.description.sponsorshipThe associate editor coordinating the review of this manuscript and approving it for publication was Dr. Joakim Jalden. This work was supported by a Grant from King Abdulaziz City of Science and Technology (KACST). The work ofY. Chen was supported in part by the Open Research Project of the State Key Laboratory of Industrial Control Technology, Zhejiang University, China (Grant IC14T40). This work appeared in part in the Proceedings of the IEEE Global Communications Conference (GLOBECOM' 2013) Atlanta, GA, USA, Dec. 9-13, 2013.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectAmplify-and-forwarden
dc.subjectcooperative relayingen
dc.subjectenergy-efficiencyen
dc.subjectNakagami-$m$ fadingen
dc.subjectpower allocationen
dc.subjectvariable-gain relaysen
dc.titleEnhancing the efficiency of constrained dual-hop variable-gain AF relaying under nakagami-m fadingen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Transactions on Signal Processingen
dc.contributor.institutionCollege of Engineering, Alfaisal University, Riyadh 11533, Saudi Arabiaen
dc.contributor.institutionSchool of Engineering, University of Warwick, Coventry CV4 7AL, United Kingdomen
kaust.authorZafar, Ammaren
kaust.authorAlouini, Mohamed-Slimen
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