Relay Placement for FSO Multihop DF Systems With Link Obstacles and Infeasible Regions

Handle URI:
http://hdl.handle.net/10754/621517
Title:
Relay Placement for FSO Multihop DF Systems With Link Obstacles and Infeasible Regions
Authors:
Zhu, Bingcheng; Cheng, Julian; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Wu, Lenan
Abstract:
Optimal relay placement is studied for free-space optical multihop communication with link obstacles and infeasible regions. An optimal relay placement scheme is proposed to achieve the lowest outage probability, enable the links to bypass obstacles of various geometric shapes, and place the relay nodes in specified available regions. When the number of relay nodes is large, the searching space can grow exponentially, and thus, a grouping optimization technique is proposed to reduce the searching time. We numerically demonstrate that the grouping optimization can provide suboptimal solutions close to the optimal solutions, but the average searching time linearly grows with the number of relay nodes. Two useful theorems are presented to reveal insights into the optimal relay locations. Simulation results show that our proposed optimization framework can effectively provide desirable solution to the problem of optimal relay nodes placement. © 2015 IEEE.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program
Citation:
Zhu B, Cheng J, Alouini M-S, Wu L (2015) Relay Placement for FSO Multihop DF Systems With Link Obstacles and Infeasible Regions. IEEE Transactions on Wireless Communications 14: 5240–5250. Available: http://dx.doi.org/10.1109/TWC.2015.2434945.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Wireless Communications
Issue Date:
19-May-2015
DOI:
10.1109/TWC.2015.2434945
Type:
Article
ISSN:
1536-1276
Sponsors:
This research is supported by an NSERC Discovery Grant. The associate editor coordinating the review of this paper and approving it for publication was N. C. Sagias.
Additional Links:
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7110383
Appears in Collections:
Articles; Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Bingchengen
dc.contributor.authorCheng, Julianen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.contributor.authorWu, Lenanen
dc.date.accessioned2016-11-03T08:31:13Z-
dc.date.available2016-11-03T08:31:13Z-
dc.date.issued2015-05-19en
dc.identifier.citationZhu B, Cheng J, Alouini M-S, Wu L (2015) Relay Placement for FSO Multihop DF Systems With Link Obstacles and Infeasible Regions. IEEE Transactions on Wireless Communications 14: 5240–5250. Available: http://dx.doi.org/10.1109/TWC.2015.2434945.en
dc.identifier.issn1536-1276en
dc.identifier.doi10.1109/TWC.2015.2434945en
dc.identifier.urihttp://hdl.handle.net/10754/621517-
dc.description.abstractOptimal relay placement is studied for free-space optical multihop communication with link obstacles and infeasible regions. An optimal relay placement scheme is proposed to achieve the lowest outage probability, enable the links to bypass obstacles of various geometric shapes, and place the relay nodes in specified available regions. When the number of relay nodes is large, the searching space can grow exponentially, and thus, a grouping optimization technique is proposed to reduce the searching time. We numerically demonstrate that the grouping optimization can provide suboptimal solutions close to the optimal solutions, but the average searching time linearly grows with the number of relay nodes. Two useful theorems are presented to reveal insights into the optimal relay locations. Simulation results show that our proposed optimization framework can effectively provide desirable solution to the problem of optimal relay nodes placement. © 2015 IEEE.en
dc.description.sponsorshipThis research is supported by an NSERC Discovery Grant. The associate editor coordinating the review of this paper and approving it for publication was N. C. Sagias.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7110383en
dc.subjectFree-space optical communicationen
dc.subjectmulti-hop relayen
dc.subjectoptimizationen
dc.subjectoutage probabilityen
dc.subjectrelay placementen
dc.titleRelay Placement for FSO Multihop DF Systems With Link Obstacles and Infeasible Regionsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Transactions on Wireless Communicationsen
dc.contributor.institutionSchool of Information Science and Engineering, Southeast University, Nanjing, Chinaen
dc.contributor.institutionSchool of Engineering, University of British Columbia, Kelowna, BC, Canadaen
kaust.authorAlouini, Mohamed-Slimen
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