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Optimizing HARQ and relay strategies in limited feedback communication systems

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dc.affiliation.dptoUC3M. Departamento de Teoría de la Señal y Comunicacioneses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Tratamiento de la Señal y Aprendizaje (GTSA)es
dc.contributor.authorZhang, Mai
dc.contributor.authorCastillo, Andres
dc.contributor.authorPeleato Iñarrea, Borja Manuel
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2023-08-24T11:36:02Z
dc.date.available2023-08-24T11:36:02Z
dc.date.issued2020-11-01
dc.description.abstractOne of the key challenges for future communication systems is to deal with fast changing channels due to the mobility of users. Having a robust protocol capable of handling transmission failures in unfavorable channel conditions is crucial, but the feedback capacity may be greatly limited due to strict latency requirements. This paper studies the hybrid automatic repeat request (HARQ) techniques involved in re-transmissions when decoding failures occur at the receiver and proposes a scheme that relies on codeword bundling and adaptive incremental redundancy (IR) to maximize the overall throughput in a limited feedback system. In addition to the traditional codeword extension IR bits, this paper introduces a new type of IR, bundle parity bits, obtained from an erasure code across all the codewords in a bundle. The type and number of IR bits to be sent as a response to a decoding failure is optimized through a Markov Decision Process. In addition to the single link analysis, the paper studies how the same techniques generalize to relay and multi-user broadcast systems. Simulation results show that the proposed schemes can provide a significant increase in throughput over traditional HARQ techniques.en
dc.format.extent21
dc.identifier.bibliographicCitationZhang, M., Castillo, A., & Peleato, B. (2020). Optimizing HARQ and relay strategies in limited feedback communication systems. Applied sciences, 10(21), 7917.en
dc.identifier.doihttps://doi.org/10.3390/app10217917
dc.identifier.issn2076-3417
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue21, 7917
dc.identifier.publicationlastpage21
dc.identifier.publicationtitleApplied Sciencesen
dc.identifier.publicationvolume10
dc.identifier.urihttps://hdl.handle.net/10016/38092
dc.identifier.uxxiAR/0000026468
dc.language.isoengen
dc.publisherMDPI
dc.relation.projectIDInternacional. COFUND-GA-2017-801538es
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/801538
dc.rights© 2020 by the authors.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.ecienciaTelecomunicacioneses
dc.subject.otherHybrid automatic repeat request (HARQ)en
dc.subject.otherCommunication systemsen
dc.subject.otherRelaysen
dc.subject.otherBroadcast channelsen
dc.subject.otherOptimization methodsen
dc.subject.otherError correction codingen
dc.titleOptimizing HARQ and relay strategies in limited feedback communication systemsen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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