Joint Network Coding and Opportunistic Scheduling for the Bidirectional Relay Channel

Handle URI:
http://hdl.handle.net/10754/292840
Title:
Joint Network Coding and Opportunistic Scheduling for the Bidirectional Relay Channel
Authors:
Shaqfeh, Mohammad; Alnuweiri, Hussein; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 ) ; Zafar, Ammar ( 0000-0001-8382-7625 )
Abstract:
In this paper, we consider a two-way communication system in which two users communicate with each other through an intermediate relay over block-fading channels. We investigate the optimal opportunistic scheduling scheme in order to maximize the long-term average transmission rate in the system assuming symmetric information flow between the two users. Based on the channel state information, the scheduler decides that either one of the users transmits to the relay, or the relay transmits to a single user or broadcasts to both users a combined version of the two users’ transmitted information by using linear network coding. We obtain the optimal scheduling scheme by using the Lagrangian dual problem. Furthermore, in order to characterize the gains of network coding and opportunistic scheduling, we compare the achievable rate of the system versus suboptimal schemes in which the gains of network coding and opportunistic scheduling are partially exploited.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Issue Date:
27-May-2013
Type:
Conference Paper
Description:
Accepted in ISIT 2013.
Appears in Collections:
Conference Papers; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorShaqfeh, Mohammaden
dc.contributor.authorAlnuweiri, Husseinen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.contributor.authorZafar, Ammaren
dc.date.accessioned2013-05-27T05:50:55Z-
dc.date.available2013-05-27T05:50:55Z-
dc.date.issued2013-05-27en
dc.identifier.urihttp://hdl.handle.net/10754/292840en
dc.descriptionAccepted in ISIT 2013.en
dc.description.abstractIn this paper, we consider a two-way communication system in which two users communicate with each other through an intermediate relay over block-fading channels. We investigate the optimal opportunistic scheduling scheme in order to maximize the long-term average transmission rate in the system assuming symmetric information flow between the two users. Based on the channel state information, the scheduler decides that either one of the users transmits to the relay, or the relay transmits to a single user or broadcasts to both users a combined version of the two users’ transmitted information by using linear network coding. We obtain the optimal scheduling scheme by using the Lagrangian dual problem. Furthermore, in order to characterize the gains of network coding and opportunistic scheduling, we compare the achievable rate of the system versus suboptimal schemes in which the gains of network coding and opportunistic scheduling are partially exploited.en
dc.language.isoenen
dc.subjectBidirectional relayen
dc.subjectblock-fadingen
dc.subjectlinear network codingen
dc.subjectmulti-user diversityen
dc.subjectopportunistic schedulingen
dc.titleJoint Network Coding and Opportunistic Scheduling for the Bidirectional Relay Channelen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.eprint.versionPre-printen
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