Cluster-head based feedback for simplified time reversal prefiltering in ultra-wideband systems

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dc.contributor.authorSoleimani, Hossein
dc.contributor.authorTomasin, Stefano
dc.contributor.authorAlizadeh, Tohid
dc.contributor.authorShojafar, Mohammad
dc.creatorHossein, Soleimani
dc.date.accessioned2017-12-21T03:25:26Z
dc.date.available2017-12-21T03:25:26Z
dc.date.issued2017-12-01
dc.description.abstractAbstract Time-reversal prefiltering (TRP) technique for impulse radio (IR) ultra wide-band (UWB) systems requires a large amount of feedback to transmit the channel impulse response from the receiver to the transmitter. In this paper, we propose a new feedback design based on vector quantization. We use a machine learning algorithm to cluster the estimated channels into several groups and to select the channel cluster heads (CCHs) for feedback. In particular, CCHs and their labels are recorded at both side of the UWB transceivers and the label of the most similar CCH to the estimated channel is fed back to the transmitter. Finally, the TRP is applied using the feedback CCH. The proposed digital feedback provides three main advantages: (1) it significantly reduces the dedicated bandwidth required for feedback; (2) it considerably improves the speed of transceivers; and, (3) it is robust to noise in the feedback channel since few bytes are required to send the codes that can be heavily error protected. Numerical results on standard UWB channel models are discussed, showing the advantage of the proposed solution.en_US
dc.identifierDOI:10.1016/j.phycom.2017.09.005
dc.identifier.citationHossein Soleimani, Stefano Tomasin, Tohid Alizadeh, Mohammad Shojafar, Cluster-head based feedback for simplified time reversal prefiltering in ultra-wideband systems, In Physical Communication, Volume 25, Part 1, 2017, Pages 100-109en_US
dc.identifier.issn18744907
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1874490716302294
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/2978
dc.language.isoenen_US
dc.publisherPhysical Communicationen_US
dc.relation.ispartofPhysical Communication
dc.rights.license© 2017 Elsevier B.V. All rights reserved.
dc.subjectUltra wide-band (UWB)en_US
dc.subjectDigital feedbacken_US
dc.subjectClustering channelsen_US
dc.subjectIEEE 802.15.SG3 channel modelen_US
dc.subjectPrefilteringen_US
dc.subjectMachine learningen_US
dc.titleCluster-head based feedback for simplified time reversal prefiltering in ultra-wideband systemsen_US
dc.typeArticleen_US
elsevier.aggregationtypeJournal
elsevier.coverdate2017-12-01
elsevier.coverdisplaydateDecember 2017
elsevier.endingpage109
elsevier.identifier.doi10.1016/j.phycom.2017.09.005
elsevier.identifier.eid1-s2.0-S1874490716302294
elsevier.identifier.piiS1874-4907(16)30229-4
elsevier.identifier.scopusid85030175017
elsevier.openaccess0
elsevier.openaccessarticlefalse
elsevier.openarchivearticlefalse
elsevier.startingpage100
elsevier.teaserTime-reversal prefiltering (TRP) technique for impulse radio (IR) ultra wide-band (UWB) systems requires a large amount of feedback to transmit the channel impulse response from the receiver to the...
elsevier.volume25
workflow.import.sourcescience

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