Improved Interference-Free Channel Allocation in Coordinated Multiuser Multi-Antenna Open-Access Small Cells

Handle URI:
http://hdl.handle.net/10754/601295
Title:
Improved Interference-Free Channel Allocation in Coordinated Multiuser Multi-Antenna Open-Access Small Cells
Authors:
Radaydeh, Redha; Zafar, Ammar; Al-Qahtani, Fawaz; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
This paper investigates low-complexity joint interference avoidance and desired link improvement for single channel allocation in multiuser multi-antenna access points (APs) for open-access small cells. It is considered that an active user is equipped with an atenna array that can be used to suppress interference sources but not to provide spatial diversity. On the other hand, the operation of APs can be coordinated to meet design requirements, and each of which can unconditionally utilize assigned physical channels. Moreover, each AP is equipped with uncorrelated antennas that can be reused simultaneously to serve many active users. The analysis provides new approaches to exploit physical channels, transmit antennas, and APs to mitigate interference, while providing the best possible link gain to an active user through the most suitable interference-free channel. The event of concurrent service requests placed by active users on a specific interference-free channel is discussed for either interference avoidance through identifying unshared channels or desired link improvement via multiuser scheduling. The applicability of the approaches to balance downlink loads is explained, and practical scenarios due to imperfect identification of interference-free channels and/or scheduled user are thoroughly investigated. The developed results are applicable for any statistical and geometric models of the allocated channel to an active user as well as channel conditions of interference users. They can be used to study various performance measures. Numerical and simulation results are presented to explain some outcomes of this work.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Improved Interference-Free Channel Allocation in Coordinated Multiuser Multi-Antenna Open-Access Small Cells 2016:1 IEEE Transactions on Vehicular Technology
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Vehicular Technology
Issue Date:
16-Feb-2016
DOI:
10.1109/TVT.2016.2530685
Type:
Article
ISSN:
0018-9545; 1939-9359
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7407649
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRadaydeh, Redhaen
dc.contributor.authorZafar, Ammaren
dc.contributor.authorAl-Qahtani, Fawazen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2016-03-13T13:20:42Zen
dc.date.available2016-03-13T13:20:42Zen
dc.date.issued2016-02-16en
dc.identifier.citationImproved Interference-Free Channel Allocation in Coordinated Multiuser Multi-Antenna Open-Access Small Cells 2016:1 IEEE Transactions on Vehicular Technologyen
dc.identifier.issn0018-9545en
dc.identifier.issn1939-9359en
dc.identifier.doi10.1109/TVT.2016.2530685en
dc.identifier.urihttp://hdl.handle.net/10754/601295en
dc.description.abstractThis paper investigates low-complexity joint interference avoidance and desired link improvement for single channel allocation in multiuser multi-antenna access points (APs) for open-access small cells. It is considered that an active user is equipped with an atenna array that can be used to suppress interference sources but not to provide spatial diversity. On the other hand, the operation of APs can be coordinated to meet design requirements, and each of which can unconditionally utilize assigned physical channels. Moreover, each AP is equipped with uncorrelated antennas that can be reused simultaneously to serve many active users. The analysis provides new approaches to exploit physical channels, transmit antennas, and APs to mitigate interference, while providing the best possible link gain to an active user through the most suitable interference-free channel. The event of concurrent service requests placed by active users on a specific interference-free channel is discussed for either interference avoidance through identifying unshared channels or desired link improvement via multiuser scheduling. The applicability of the approaches to balance downlink loads is explained, and practical scenarios due to imperfect identification of interference-free channels and/or scheduled user are thoroughly investigated. The developed results are applicable for any statistical and geometric models of the allocated channel to an active user as well as channel conditions of interference users. They can be used to study various performance measures. Numerical and simulation results are presented to explain some outcomes of this work.en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=7407649en
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.subjectantenna array steeringen
dc.subjectcoordinated transmissionen
dc.subjectdesired link improvementen
dc.subjectinterference avoidanceen
dc.subjectinterference-free channel identificationen
dc.subjectload balancingen
dc.subjectmultiuser schedulingen
dc.subjectmultiuser systemsen
dc.subjectopen-access cellsen
dc.subjectreconfigurable antenna systemsen
dc.subjectresource allocationen
dc.subjectsmall cellsen
dc.subjectstatistical modelingen
dc.titleImproved Interference-Free Channel Allocation in Coordinated Multiuser Multi-Antenna Open-Access Small Cellsen
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.institutionElectrical Engineering Program, College of Engineering, Alfaisal University, Riyadh, Saudi Arabiaen
dc.contributor.institutionCentre for Real-Time Information Networks, University of Technology Sydney, Sydney, Australiaen
dc.contributor.institutionElectrical & Computer Engineering Program, Texas A&M University at Qatar, Doha, Qataren
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAlouini, Mohamed-Slimen
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