Linear interference cancellation for the cell-free C-RAN uplink

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• dc.contributor.author Mosayebi, Reza
• dc.contributor.author Mojahedian, Mohammad Mahdi
• dc.contributor.author Lozano Solsona, Angel
• dc.date.accessioned 2021-05-13T09:14:33Z
• dc.date.available 2021-05-13T09:14:33Z
• dc.date.issued 2021
• dc.description.abstract Drawing on the notion of parallel interference cancellation, this paper formulates a one-shot linear receiver for the uplink of centralized, possibly cloud-based, radio access networks (C-RANs) operating in a cell-free fashion. This receiver exhibits substantial interference rejection abilities, yet it does not involve any matrix inversions; rather, its structure hinges on the pairwise projections of the users' channel vectors. Its performance is markedly superior to that of matched-filter beamforming, while the computational cost is decidedly inferior to that of an MMSE filter, altogether constituting an attractive alternative in terms of performance vs cost. Furthermore, with a proper sparsification of the channel matrix that it estimates and processes, the proposed receiver can be rendered scalable in the sense of its computational cost per access point not growing with size of the network. Uplink power control is also readily accommodated.
• dc.description.sponsorship The authors are with Univ. Pompeu Fabra, 08018 Barcelona and their work is supported by the European Research Council under the H2020 Framework Programme/ERC grant agreement 694974, by MINECO’s Projects RTI2018-102112 and RTI2018-101040, and by the ICREA academia program.
• dc.format.mimetype application/pdf
• dc.identifier.citation Mosayebi R, Mojahedian MM, Lozano A. Linear interference cancellation for the cell-free C-RAN uplink. IEEE Trans Wirel Commun. 2021;20(3):1544-56. DOI: 10.1109/TWC.2020.3034269
• dc.identifier.doi http://dx.doi.org/10.1109/TWC.2020.3034269
• dc.identifier.issn 1536-1276
• dc.identifier.uri http://hdl.handle.net/10230/47549
• dc.language.iso eng
• dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
• dc.relation.ispartof IEEE Transactions on Wireless Communications. 2021;20(3):1544-56
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/694974
• dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/RTI2018-102112
• dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/RTI2018-101040
• dc.rights © 2021 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. http://dx.doi.org/10.1109/TWC.2020.3034269
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.subject.keyword C-RAN
• dc.subject.keyword Cell-free networks
• dc.subject.keyword Ultradense networks
• dc.subject.keyword Parallel interference cancellation
• dc.subject.keyword Power control
• dc.title Linear interference cancellation for the cell-free C-RAN uplink
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/acceptedVersion