Energy Efficiency - Spectral Efficiency Trade-off: A Multiobjective Optimization Approach

Handle URI:
http://hdl.handle.net/10754/552559
Title:
Energy Efficiency - Spectral Efficiency Trade-off: A Multiobjective Optimization Approach
Authors:
Amin, Osama; Bedeer, Ebrahim; Ahmed, Mohamed; Dobre, Octavia
Abstract:
In this paper, we consider the resource allocation problem for energy efficiency (EE) - spectral efficiency (SE) trade-off. Unlike traditional research that uses the EE as an objective function and imposes constraints either on the SE or achievable rate, we propound a multiobjective optimization approach that can flexibly switch between the EE and SE functions or change the priority level of each function using a trade-off parameter. Our dynamic approach is more tractable than the conventional approaches and more convenient to realistic communication applications and scenarios. We prove that the multiobjective optimization of the EE and SE is equivalent to a simple problem that maximizes the achievable rate/SE and minimizes the total power consumption. Then we apply the generalized framework of the resource allocation for the EE-SE trade-off to optimally allocate the subcarriers’ power for orthogonal frequency division multiplexing (OFDM) with imperfect channel estimation. Finally, we use numerical results to discuss the choice of the trade-off parameter and study the effect of the estimation error, transmission power budget and channel-to-noise ratio on the multiobjective optimization.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Energy Efficiency - Spectral Efficiency Trade-off: A Multiobjective Optimization Approach 2015:1 IEEE Transactions on Vehicular Technology
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Vehicular Technology
Issue Date:
23-Apr-2015
DOI:
10.1109/TVT.2015.2425934
Type:
Article
ISSN:
0018-9545; 1939-9359
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7093179
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAmin, Osamaen
dc.contributor.authorBedeer, Ebrahimen
dc.contributor.authorAhmed, Mohameden
dc.contributor.authorDobre, Octaviaen
dc.date.accessioned2015-05-10T14:35:15Zen
dc.date.available2015-05-10T14:35:15Zen
dc.date.issued2015-04-23en
dc.identifier.citationEnergy Efficiency - Spectral Efficiency Trade-off: A Multiobjective Optimization Approach 2015:1 IEEE Transactions on Vehicular Technologyen
dc.identifier.issn0018-9545en
dc.identifier.issn1939-9359en
dc.identifier.doi10.1109/TVT.2015.2425934en
dc.identifier.urihttp://hdl.handle.net/10754/552559en
dc.description.abstractIn this paper, we consider the resource allocation problem for energy efficiency (EE) - spectral efficiency (SE) trade-off. Unlike traditional research that uses the EE as an objective function and imposes constraints either on the SE or achievable rate, we propound a multiobjective optimization approach that can flexibly switch between the EE and SE functions or change the priority level of each function using a trade-off parameter. Our dynamic approach is more tractable than the conventional approaches and more convenient to realistic communication applications and scenarios. We prove that the multiobjective optimization of the EE and SE is equivalent to a simple problem that maximizes the achievable rate/SE and minimizes the total power consumption. Then we apply the generalized framework of the resource allocation for the EE-SE trade-off to optimally allocate the subcarriers’ power for orthogonal frequency division multiplexing (OFDM) with imperfect channel estimation. Finally, we use numerical results to discuss the choice of the trade-off parameter and study the effect of the estimation error, transmission power budget and channel-to-noise ratio on the multiobjective optimization.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7093179en
dc.rights(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en
dc.subjectEnergy efficiencyen
dc.subjectLMMSEen
dc.subjectOFDMen
dc.subjectimperfect CSIen
dc.subjectmultiobjective optimizationen
dc.subjectspectral efficiencyen
dc.titleEnergy Efficiency - Spectral Efficiency Trade-off: A Multiobjective Optimization Approachen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalIEEE Transactions on Vehicular Technologyen
dc.eprint.versionPost-printen
dc.contributor.institutionEngineering, Assiut University, Assiut, Egypten
dc.contributor.institutionSchool of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canadaen
dc.contributor.institutionEngineering and Applied Science, Memorial University of Newfoundland, St. John’s, NL, A1C 5S7, Canadaen
kaust.authorAmin, Osamaen
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