Suppression of cyclic prefix in down-link LTE like systems to increase capacity

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dc.contributor.author Fernández-Getino García, María Julia
dc.contributor.author Prieto del Amo, Carlos
dc.date.accessioned 2015-06-25T08:14:07Z
dc.date.available 2015-06-25T08:14:07Z
dc.date.issued 2013-06
dc.identifier.bibliographicCitation IEEE Vehicular Technology Conference, VTC’13 (2013) pp. 1-5
dc.identifier.issn 1550-2252
dc.identifier.uri http://hdl.handle.net/10016/21186
dc.description The proceeding at : 77th Vehicular Technology Conference (VTC Spring), took place 2013, June 02-05, in Dresden (Germany).
dc.description.abstract In this paper it is presented a proposal to increase the capacity of Down-Link (DL) transmissions in Long Term Evolution (LTE) like systems based on Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM). The augment of the data rate is achieved with the total or partial suppression of the Cyclic Prefix (CP), which requires the use of a variable number of samples without conveying any information. The proposal is based on an iterative cancellation of the main impairments that the CP suppression supposes, the Inter Symbol and Inter Carrier Interferences. The interference mitigation procedure demands adequate channel estimations obtained in two different stages. Firstly, this new scheme requires the utilization of a preamble symbol appended to the beginning of the data transmission, which enables an initial Maximum Likelihood channel estimation. Secondly, time-variant channels will be estimated using a Least Squares estimator by the use of scattered pilots within the LTE frame structure. Through simulations it has been demonstrated that, despite the interferences arisen due to the CP suppression, our proposal attains adequate channel estimations which converge to theoretical bounds and the overall system obtains values of Bit Error Rate similar to the ideal situation of not suppressing the CP. It is also presented that considering the typical values of CP in the LTE standard the increment of the capacity employing this strategy can range between 7% and 25%.
dc.description.sponsorship This work has been partly funded by the Spanish national projects GRE3NSYST (TEC2011-29006-C03-03) and COMONSENS (CSD2008-00010).
dc.format.extent 5
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE - The Institute of Electrical and Electronics Engineers, Inc
dc.rights © 2013 IEEE
dc.subject.other Channel estimation
dc.subject.other Intercarrier interference
dc.subject.other Least squares approximations
dc.subject.other Long Term Evolution
dc.subject.other MIMO communication
dc.subject.other OFDM modulation
dc.title Suppression of cyclic prefix in down-link LTE like systems to increase capacity
dc.type bookPart
dc.type conferenceObject
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1109/VTCSpring.2013.6692775
dc.subject.eciencia Telecomunicaciones
dc.identifier.doi 10.1109/VTCSpring.2013.6692775
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2011-29006-C03-03
dc.type.version acceptedVersion
dc.relation.eventdate 2013, June 02-05
dc.relation.eventnumber 77
dc.relation.eventplace Desdren (Germany)
dc.relation.eventtitle IEEE Vehicular Technology Conference (VTC Spring)
dc.relation.eventtype proceeding
dc.identifier.publicationfirstpage 1
dc.identifier.publicationlastpage 5
dc.identifier.publicationtitle IEEE Vehicular Technology Conference, VTC’13
dc.identifier.uxxi CC/0000022070
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