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A unified treatment of optimum pilot overhead in multipath fading channels

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dc.contributor.author Jindal, Nihar
dc.contributor.author Lozano Solsona, Angel
dc.contributor.other Universitat Pompeu Fabra
dc.date.accessioned 2011-11-11T12:50:46Z
dc.date.available 2011-11-11T12:50:46Z
dc.date.issued 2010
dc.identifier.citation Jindal N, Lozano A. A unified treatment of optimum pilot overhead in multipath fading channels. IEEE transactions on communications. 2010; 58(10): 2939-2948. DOI 10.1109/TCOMM.2010.083110.090696
dc.identifier.issn 0090-6778
dc.identifier.uri http://hdl.handle.net/10230/13027
dc.description.abstract The optimization of the pilot overhead in single-user wireless fading channels is investigated, and the dependence of this overhead on various system parameters of interest (e.g., fading rate, signal-to-noise ratio) is quantified. The achievable pilot-based spectral efficiency is expanded with respect to the fading rate about the no-fading point, which leads to an accurate order expansion for the pilot overhead. This expansion identifies that the pilot overhead, as well as the spectral efficiency penalty with respect to a reference system with genie-aided CSI (channel state information) at the receiver, depend on the square root of the normalized Doppler frequency. It is also shown that the widely-used block fading model is a special case of more accurate continuous fading models in terms of the achievable pilot-based spectral efficiency. Furthermore, it is established that the overhead optimization for multiantenna systems is effectively the same as for single-antenna systems with the normalized Doppler frequency multiplied by the number of transmit antennas.
dc.description.sponsorship Work supported by the Spanish Ministry of Science and Innovation (Refs. TEC2009-13000 and CONSOLIDER-INGENIO CSD2008-00010 ”COMONSENS”)
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
dc.rights © 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works./nThe final published article can be found at http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5567190
dc.subject.other Doppler, Efecte
dc.subject.other Comunicació sense fil, Sistemes de
dc.subject.other Ràdio -- Antenes
dc.title A unified treatment of optimum pilot overhead in multipath fading channels
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1109/TCOMM.2010.083110.090696
dc.subject.keyword MIMO
dc.subject.keyword Spectral efficiency
dc.subject.keyword Channel estimation
dc.subject.keyword Doppler spectrum
dc.subject.keyword Multiantenna
dc.subject.keyword Mutual information
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/TEC2009-13000
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/CSD2008-00010
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/acceptedVersion

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